Congratulations on the new gear and the beautiful results you shared!
I had planned to rent the RF 100-500mm for my birthday, which was over the weekend. Coincidentally, the main subject I found was a GBH.
My usual longest lens is the ancient EF 400mm f/5.6 with a 1.4X teleconverter. Naturally I compared the two. The RF 500 is sharper and focuses faster, though the performance gap between it and the old lens was less than I had expected. The camera was an R5 in crop mode. So not an R7, but I thought the comparison might still be interesting in this thread.
For sure, David's results were significantly better than any of mine.
500mm f7_1 ISO 500 by dfwatsoneuro, on Flickr
560mm NR added by dfwatsoneuro, on Flickr
I expected him to disappear in a puff of smoke behind the cape!
560mm f8 ISO 800 by dfwatsoneuro, on Flickr
Posing like the villain in a melodrama.