I'm a big fan of PCCs for the above stated reasons. My Marlin Camp Carbine goes very nicely with my 1911s and use the same magazines. I've got two Rossi Model 92s in .357 & 45 Colt and have hunted deer with both. They go well with my Ruger BH 45 and my GP100 .357. I think they would be good medicine for a SHTF situation.
Tons of fun also! I'm considering a Ruger BH in 30 Carbine to go with my Father's old carbine.