MrBumps2U wrote:
I can and do handhold this lens for short periods of time, and I appreciate the freedom of movement that handholding provides. On this trip, we’ll be traveling by van and remain in single locations for multiple hours each day. Having a tripod not only makes sense, but is on the “required equipment” list. I can always handhold if appropriate.
Got it. I think that unless you are locking down your gimbal and using remote shutter release, mirror lockup and shutter delay I wouldn't worry about a stabilizer. Using good lens technique involves keeping the support loose so that you can pan around easily, using your left arm, forehead and other parts of you to stabilize the camera.
This video may help.