Many states demand concealment during carry as part of the permit requirements. In states where a hand gun is holstered out in the open, the act of certain crimes against those carrying an evident gun is nearly 0.
Another vote for a single action Taurus for personal protection purposes, due to size & designs http://www.taurustactical.com/products/products-revolvers.cfm Hand guns and cameras seem to ride better when small, but maybe that's just me. To each his own.