Duster, the company that hires you is entitled to ownership of anything you produce while on paid company time unless you can negotiate a different contract. Photos you take after hours are totally yours even though they may have paid your travel expense to get you to the location unless they negotiate a contract to the contrary. You and the company should determine the rules before venturing into any contract for hire and how many hours per day you are committed to work. If its a blanket amount of money to go and photograph a project they may think all the time you are there you are on company time as a salaried person would be.
As a small business owner and freelance graphic artist I have worked for hire and as an independent entity, the rules as to who owns what in the end are stated at the beginning of the job.
Have fun during the time you are on location and I would hope you can make a contract to have some personal time to get some great shots of other things too.

Downloaded/installed the 1.04 update from Canon yesterday, it semi-addressed a problem I was having using a Kenko 1.4 with my 100/400L. Previously I was getting an error 01 about 80-90% of the time when shooting high contrast scenes, now seems that has dropped to about 40-50% of the time. Using the lens/tcon with manual focus and IS turned off clears the problem of the error but shooting action without AF and IS is not easy at 560mm, so the lens/tcon combo is too erratic and still not worth the aggravation of missing a shot. The update didn't do anything for the use of my 100L macro and the Kenko 1.4, the camera still locks up, and you have to remove the battery just to shut down the camera. So far cannot tell if it has helped/hindered anything else, still like the camera and it works perfectly otherwise, maybe the next firmware update will fully address the Kenko compatibility.

Canon T3i, T4i, T5i are all good for video and still photography, get the 18/135 STM lens for it and an external microphone. There are other Canon cameras also, but these recommended above are low/medium priced and make 1080 video.

The 7D mk2 is a great camera for the price, bought one last December and have really liked it, also got the 18/135 STM, super quiet and fast focus, great for video and an excellent medium priced lens for general photography. I did have to send the lens back to Canon for some adjustments, it wasn't as sharp as my older 18/135 USM, but they fixed it and now works fine. Maybe you'll win the lottery and get one of the cameras you were looking at.

Thanks to all who replied and glad it was a help to a few that needs to tote a heavy camera. I needed something that was a safer connection than what I had been using as I climb a 28' ladder to shoot an eagle nest a few times a week.
And yes, some day I may have to trade this camera/lens in on a "lighter" weight system, luckily at 67 I'm still in very good physical shape but until that time comes I'll use what I have. Hopefully by then the technology will have advanced to where there will be super zooms 2 or 3 inches long and full sensor cameras that weigh a couple ounces.

I can do that myself, and keep a small grease gun in my camera bag, can never tell when I'd need for other things too.

SS, good one, guess if I wore speedos I'd use a pocket camera too!
Whatever boats your float.....

Oh well, I do live on the edge sometimes, but this doesn't seem to be any risk compared to hanging it from the battery grip. The camera has a titanium frame and the 100-400L lens has a pretty hefty metal mount.

No, this is the principal carry connection.

Didn't want to use the lugs, that type strap is in the way with a shoulder harness. Considering the weight factor is why I chose to go with the strap around the lens. There is FAR less leverage hanging the camera from that point than would be created by hanging it from the lens foot or from the camera's tripod mount or especially from the battery grip. Didn't know Optec was already selling these, I'm sure they did quite a bit more research that I did before recommending them for use on heavy equipment.

Thanks Jerry, I'll watch it and take it in for a grease job on a regular basis.

MT, didn't figure I had invented anything, just a country tinker's way of solving a need (we do think beyond duck tape and bailing wire around here sometimes). Glad to see they are already available and thanks for the link, maybe someone will benefit from it, would be well worth the $10 if I hadn't already rigged this up.

Thanks Robert, I have a 70-300 for my T3i and it's light enough, but I'm not looking to change camera/lens, or go with a smaller sensor, the point was the tether around the lens is a stronger point to attach the 7D mk2 and heavy lens to a harness strap in place of directly to the grip.

When I want to go light weight I use a T3i and a nifty-fifty or an 18/135 but for some reason I just can't get the distant wildlife shots with that setup.

I've thought of it, but still using this beast as long as I can carry it.