Lofty,
Yes,you are so right there. It is the fit that matters most whether it be in your hand or how it carries on your person.

In all honesty,I feel that the Glock 42 or 43 are pretty much the size of a J frame,give or take a bit.

Holster choice does make a BIG difference as well as having the proper belt (which is also very important).

I have a Milt Sparks summer special holster that I have for my 1911 Commander and must say that it pretty much makes the piece disappear. Of course,I am quite big (6'3"/240) so that does make a difference.

Being that I am an old fart,I still cling to my revolvers and prefer my Charter BullDog 44 that I have configured to their new Boomer model. It basically disappears in a IWB crossdraw.

Wayne