If these turn out to work well I may pick a kit up for my P226. We'll see I guess. I'm a huge P-series fan, but some of Sig's new offerings have had to go through some "growing pains" these last few years.
I have the P226 kit. It has functioned flawlessly. So far I've put Aguila 40gr copper plated, Federal Bulk 36gr HP copper plated (Walmart specials), and CCI Stinger 32gr copper plated HP thru it without any issues. If I remember correctly I sent 50 Aguila, 50 Federal, and 40 CCI downrange in one visit. Sorry, but with one mag it sucks to keep reloading at an indoor range.
I'm in for one if they make one for the P228 or P220. Gotta be able to get a bunch of mags for it though.... only one mag would drive me batshit insane.