To add, from personal experience of family...
My step brother's wife recently got a concealed carry permit. She was informed by her husband (my step brother, the cop in Denison), and by her instructor, that she had to carry .32 or larger, and had to qualify with a .32 or larger. She was very disappointed because she intended to carry a .22 (why? I never got a good answer, but it seems she's just afraid of recoil).
I found out about this because she contacted me to recommend a gun to her to test drive.