Now I am back from morning chores and I can continue.....
My biggest complaint with the 21A is the lack of an extractor. If for whatever reason pulling the trigger twice does not clear a FTF then there is no very fast immediate action drill. Pulling the slide back does not eject a cartridge. Closest thing is to press the barrel release and allow the barrel to pop up, if it will, inspect to see if the old round was thrown free and if not pry it out with a finger nail, close the barrel back down, rack the slide and attempt to fire.
Given that this must be done while a bad guy might be close enough to bite you this is not a realistic possibility in defense.
You can see why you must keep a 21A scrub room clean and test ammo extensivly, test magazines extensively, and practice extensively.
I breifly flurted with carrying in an ankle holster which is my least favorite way, but at that weight, in those clothes, and in that climate was the best option. The gun got nasty quickly in an ankle holster even though I thought it well protected.
The sights of the 21A are teenie tiny and only realy usable in slow fire with no stress. However again at seven yards and under the front sight is enough to get in target with, but their will be no "aiming at a shirt button" if the 21A is used defensively.
I have seen some guns that had a problem with DA trigger pull reset.
If this second post sounds like I am trashing the gun, consider I did carry one for years and I had other options. These however are things you need to be aware of. With the host of .32, .380, even 9 silly meter available in small packages today I might look to see if any of those were as carriable. They are more (much more) expensive to shoot and some just as ammo sensitive. I would not feel unarmed if for some reason a 21A that I had cared for, tested and practiced with was what I had.
I do wish it had an option for a longer barrel like the old 950 single action had. Not sure how much the .22 LR would benifit from an extra inch of barrel r how much concealability would be lost but a longer sight radius and a better pointer might be useful.
-kBob