In such a short bbl .22 magnum doesn't have the same power advantage that it would have out of a rifle or longer pistol bbl.
I like the DA capability of my 351PD, but will admit that it's $630 cost was dear - and probably more than a couple of NAA's would have cost.
Get Chang's grips for them, they are the BEST bar none.
http://revisioncv.com/products
Those are nice grips, but I gotta ask - Why??? Yeah, it makes NAA's look really good but doesn't that defeat the purpose of deep-deep-concealment? I mean, it makes it almost as large as a J-Frame!