For true summer pocket carry i'd get a hard chromed Kel-tec .32 with the factory clip attached.
Of those choices I picked NAA .32. Here is why.
The mini can't be quickly reloaded, and it's a rimfire .22, not to mention awkward to hold, must cock hammer to fire etc.
The .32 NAA is significantly smaller than the Ruger although i'm sure it's heavier.
The .32 NAA has a life time warranty, and is a quality all metal gun that will out last any polymer gun.
It really depends on your summer attire, thin shorts with a draw sting then Kel-tec, cargo shorts with a real belt and i'd want the NAA.