If someone has trained with and measured his/her performance with the mini pistol in their pocket, then I say go right ahead!
Each defender sets the standards for what are acceptable draw times from concealment to first shot for them. They set acceptable times and accuracy for failure-to-stop and Bill drills (or whatever drills they prefer) at whatever distances are suitable for them. Acceptable times for malfunction clearing, reloads, etc. for her or him.
For me, I have never been able to meet my standards on these kinds of exercises with mini-guns in a pocket. So I don't carry them, even on the proverbial "milk run".
If someone carries a little gun, but can't say how well they perform with it, then, I say, shame on you! This is America! Get to the range and find out! Get some competent advise and training! You might be surprised how poorly, or how well, it works for you.
But whatever you decide, make those decisions about what and how to carry based on real performance, NOT hopes, dreams, or imagination.