Ruger LCP. No holster. I use a KelTec P3AT belt clip. The pin is a little tight, but it worlks. I did a little work with a hammer to mold the base of the clip to the frame. This is not a requirement, but gives it that "carry melt" feel.
My hands are large and thick. Shooting the LCP required a few days of practice to master, but now it's a breeze. I have a Crimson Trace laser, which is pretty accurate. Tried an Uncle Mike's #10 clip holster, but it's not big enough for the laser. Also used a Nemesis pocket holster for a short while, but ultimately found it unnecessary in my cargo-style shorts.
In summer, I wear almost exclusively shorts and Ts. I keep the gun in my pocket occasionally, but usually at either 1 o'clock or 4 o'clock tucked in my shorts. Wore it to church this morning...nobody noticed.