I think a 24 is on the edge of being an ultrawide, but not quite.
Yes, he did use it a lot. One of the signature "looks" is this view where the foreground has a prominent element and you still have a long view of distant mountains. It has become somewhat of a cliche.
However, he used quite a variety of lenses - from a 15mm to an 80-200 F2.8 for landscapes.
Most of his gear decisions were made with an eye on weight and portability - so he could carry what he needed, often rock climbing to very remote locations - to get many of his amazing shots. He also didn't shoot digital, which might explain why he did not employ panoramas into his portfolio. But he could have had a hybrid process where he shot film then digitized it so he could edit on a computer. I really don't know enough about his process to comment.
http://www.mountainlight.com/rowell/gr_camera_bag.htmlThe ease with which one can put together a pano, along with the obvious benefits - reasonable portrayal of distances and scale, larger images that require less magnification to print, which translates into better printed image quality, and the flexibility of bringing fewer lenses into the field - if you have a 45mm lens you can easily cover the width of a 14mm lens on a full frame camera with 5-6 overlapping shots.
The first image is an example of a 6 frame pano, overlapped 50%, using a 45mm lens with camera in portrait orientation. I had my 14mm with me but in my test shot, the buildings were really tiny, as if the were moved from the Upper West Side of Manhattan across the Hudson River to North Bergen, New Jersey.
The resulting image is 15869x7394 px, or 117 mp, the posted image was downsampled for posting on UHH.
The second image is a single image taken with a 24mm lens in landscape orientation as a test shot, which I was not happy with for a number of reasons, followed by a 3 frame pano, same focal length, portrait orientation, 50% overlap.As you can see, there was no way that I could get the sky, reflection of the sky in the water, and the shoreline on either side of the bridge without going wide. I did not have my 14mm with me, so instead I did the pano and got everything I wanted. I ended up lopping off the top of the image above the trees, to get this result. The 14mm would have given me the width, but as in the other image, the buildings and even the bridge would have been smaller, and the foreground rocks would have been disproportionately large, dominating the composition, which was not my intent. I wanted the grouping of rocks to "point" towards the bridge. One more thing, in order to get the reflection with the 24mm I had to tilt the camera down, which resulted in keystoning that would have had to be corrected in post processing. The pano was shot with the camera perfectly level.
This is one of the examples I use to advocate for the use of panorama vs very wide angle.
I think a 24 is on the edge of being an ultrawide,... (