My humble submission... The "J" frame is a CQB gun but with practice can be a very effective 25 meter gun too especially when you get good at staging the trigger & hammer. It took me a spell but 95 times out of a 100 I can go from DA to SA without any use of my thumb...
Please ignore the "D" frame Colt...
My (2) most carried J's coupled with Tyler-T's...