First of all, I think it's reasonably well established that a USP .45 is probably a better backcountry pistol than a revolver.
With that out of the way, and assuming that "because reasons," someone wanted to do otherwise, like carry a .357 revolver, what does the hive mind think about six vs. seven shots?
Adding a response to the first reply: Generally, the threat concern would be black bear, mountain lion, canines of all shapes and sizes, wild pigs, etc. Four-legged stuff in 48 states outside the northern Rockies. Understood that most of those tend to make themselves scarce - until they don't. Possibly two-legged, but not a primary concern.
Both L frame and GP100 can be had both ways now. One more round vs. departing from standard support gear. Limited selection of configurations. Speed loaders for L frame are available, but not inexpensive. I haven't figured out whether they work for the GP cylinders. I haven't found whether speed strips with the right spacing for seven-shot cylinders are available. If holsters are molded for cylinder flutes, they won't quite fit right.
There's also the eight shot option in an N-frame, but for some reason, I'm not very interested in that. I probably would be, if they made one that looked like this:
https://www.smith-wesson.com/firearms/model-629
Tell me why that is wrong, if you have an opinion.