Unlike other Sig pistols, I haven't heard many good things about the Mosquito. I have been reading that, but also read that sig has redone this gun to help with the jamming issues in 2012. I am not sure yet as I am going to look a little harder at the 1911-22. Anything in .22 is a bad idea for reliability IMHO. But a 1911 with a .22 conversion makes a lot of sense from many perspectives. It would hold value and could be a decent sidearm. With how hard .22 has been to find, and my experience with at least 1 in 500 rounds always being dead even from the best MFG it's only good for paper and plinking. You said no one is going to carry so then any 22 will do. I would recommend a heavy bull barrel Ruger or similar. If you just want it for accuracy. Meh... were I buying a .22 pistol it would be the PMR30 .22mag. My service manager has one and it is quite impressive... http://www.keltecweapons.com/our-guns/pmr-30/pistol/ I had their sub2000 rifle for a while, pretty shitty if you ask me--perhaps their pistols are built better.