I'm considering getting the .22LR conversion kit for my P229 when it comes out. It's a little more than $300, putting it on par with other dedicated .22LR pistols. I'm swaying towards the conversion kit because I'll be shooting my carry gun and never change grip angle, which sounds good to me. Any disadvantages to buying the .22LR conversion for cheap practice on my carry gun? EDIT: It is the one that Sig Sauer is putting out from the factory.