I can shoot through the winter, it gets cold and some snow/ice, but it is flat, so not too bad. I love cold weather, with a centerfire gun, less so with the Kadet.
I put a red dot on my P-07 for a few months and did great with it. With the shorter distance between the end bore in the slide and the chamber end, the barrel may have to be slightly looser to allow the barrel chamber end to drop the same distance as the longer barrel gun. CGW would have to confirm that. Perhaps the lock up isn't quite as tight as a longer barrel P-09, but I didn't try to quantify the small if any differences. All pistol barrels are too short for harmonics to be much of a concern, I think. I haven't shot the P-07 out to 200 yards, but I have to 100 yards with good results. I had high score in (one!!) local bullseye match shooting the P-07, much to the surprise of my fellow custom 1911 buddies.
So, generally, the shorter the barrel, the looser the fit has to be to the slide at the muzzle end to allow a semi-auto gun to function. The exit velocity should probably be a slightly lower than a longer barrel gun so the holdover at 100 yards is different by a few inches, I think, so the P-07 should be harder to shoot well at 100 yards, but there isn't much of a degradation, in my opinion. But I haven't done a lot of testing, just some. Hard to get fired up to quantify small differences between two excellent firearms. I did enough testing to be convinced that the differences were small, and stopped testing, took the red dot off, got a holster, and carry the gun with me now.
Thanks for the kind words.
Joe