I can’t speak to this particular version but I own P365 Macro Comp, and X-Five Legion Comp and a P320 AXG legion. All of them use the same type of comp that the XTen has. It is an expansion chamber comp. Being that it is built into the slide and not attached to the barrel you maintain your factory spring rates and reliability but you also get a flatter shooting gun. The built in comps that Sig is coming out with on their various pistols do work. They aren’t going to blow you away like barrel attached comps from companies like Radian and Parker Mnt but they do help mitigate muzzle rise. Something to note is while you have a shorter barrel the recoil spring length is the same length as the slide. So between the expansion chamber comp and the added spring rate you do get a noticeable feel with the comp Sigs vs the uncomped versions.
The interesting thing to me about the XTen comp is that it is a single port design vs the double port design that Sig has on their other comp guns. I’m assuming they wanted to keep the XTen comp relatively compact so they went with the shorter comp. I am not much of a 10mm guy but I think it is pretty cool that Sig put out a pretty much concealable 10mm pistol. The original XTen was a 5” gun and the XTen comp is a 4.25” slide with a 3.8” barrel. I’d like to see them offer a 5” slide with the 4.25” barrel and a double expansion chamber comp. It would be bigger obviously but with a Surefire X300 attached the light would be flush with the end of the slide, you’d have that extra mass from the light, a little extra barrel length, a bigger comp, and longer recoil spring. With an AXG type module it would be a hell of a fighting pistol. It would be flat and fast. If they did that I’d probably make the leap to owning a 10mm.