Was looking at the compact 10mm witnesses, the ones without the rounded slide. was wondering if anyone here has had any experience with the witness or better yet the 10mm. it appeals to me because while 10mm auto is hard to find you can easily purchase a conversion kit to make it a .45 (and a compact 45 isnt too bad either). Just always wanted a 10mm. Ive been reading up a lot and it seems buying a stronger recoil spring is pretty much required. so...thoughts?