LH2,
A thought or two from someone who has enjoyed revolvers over the last 30 years.
First, like others who have commented in this thread, I shoot revolvers in single-action mode on only limited occasions: checking inherent accuracy of the firearm; midrange or long range target shooting; midrange or long-range hunting. Beyond those circumstances, my revolvers are all fired double action. That is the single/primary quality of our modern weapons that set them apart from the old self-defense single action weapons of 100 years ago.
Particularly for defensive uses and training, double action is the only way to go. If your adversary is close, any shooting is likely to be very, very quick and furious (something difficult or impossible in single action mode); if your adversary is distant, justifying the use of single action mode, you probably ought not be shooting anyway. You ought to be "fleeing" to safety. And since we do as we practice, virtually all practice ought to be conducted in double action mode. That way, when it hits the fan, you will shoot as you train.
Believe it or not, I even practice double action shooting with my hunting revolvers, for much of my hunting is of wild boar... close range, fast shooting, at moving targets.
So I strongly encourage frequent practice in double action mode if your weapon of choice is a revolver.
Consistent with that recommendation, I suggest you consider purchasing your snubby defense revolvers with either concealed hammers or hammers lacking a spur (I remove the spur from those that do not come that way from the factory). Smith and Taurus have a good selection. In fact, purchasing them DAO is probably the best as it eliminates any temptation to use them other than as they were intended. The hammer spur is a liability to drawing the weapon from concealed carry (snags on everything) and therefore is something to be avoided, in my judgment.
Those are my thoughts. Make any sense?
Boarhunter