"I understand tucked in shirts aren't the "best" practice for CC"
I carry a 4" Colt Python or similar handgun most of the time and all my shirts are tucked in. I have no problem at all concealing or drawing my handgun. I use a high quality pancake holster for most of the revolvers I carry concealed. The semi-autos I carry are carried in a similiar fashion. I have carried handguns in a shoulder holster in the past but now OWB (on the waist band) is my preferred carry.