I'm not nuts about DAO revolvers (which have been made DAO via a de-spurred hammer), but I do own a S&W 64 snubbie in this configuration and it's a nice carry gun.
I like the 3" fixed-sight GP100s (I have two of them) and think that the half lug and de-spurred hammer make this gun look pretty cool. With a set of Uncle Mike's "combat" grips, they look all business.
I'd jump on that gun. In today's market, that price is the going rate at a store, and you'll probably never run across one like that again.
Here are mine: