I have a P3-AT and it's a good gun up close. I've got probably 300 rounds through mine with only 1 FTF. (Hard primer on Remington practice ammo.) It's pretty accurate up close, but lately the range I shoot at has only been letting us shoot from the 25 yd line. I have trouble hitting the silhouette most of the time from that range.
I'd say go for it. They're cheap, reliable and SMALL. You can hide these guns anywhere.