The practical definition of concealed carry in TX is something along the lines of "undetectable carry." The law says "intentionally fails to conceal," but I personally know LEO's who will arrest for inadvertent printing. To some of them, accidental implies negligence, & negligence implies willful disregard. Not all places are like that. I've also been to several small towns/communities where they don't care if it's completely exposed on your hip.
Considering that, it's generally best to play it safe & stick to easily concealable compacts/pocket pistols. My most common summer-time carry is a 2.5" .357 that fits comfortably in my front pocket. It looks like I carry a big set of keys to anyone else.