I am still undecided between the two. I am some what concern about 38's ability when compared to 9mm hydrashocks and the range of ammo available.
Don't sell the modern .38 spcl +P JHP short, it's a good SD round. .38s have been killing people for decades. There is an absolute plethora of .38 spcl. ammo out there. For a 2" or less snubbie, use something like the Speer Gold Dot Short Barrel round. Remember, no one wants to get shot with ANYTHING.
A revolver is an excellent backup gun. The major pluses for it are reliability and ease of deployment.
A revolver will go BANG about 99.99% of the time when you pull the trigger. If it doesn't, simply pull the trigger again. As for getting it into action, simply draw, point, and fire. No safeties, no worrying about is there one in the chamber, no wondering if it's in DA or SA, no jams. Also, a revolver with the other loaded JHP rounds showing in the cylinder ends is kinda intimidating.
When practicing, I don't even bother to aim my Taurus 85 any more, I simply point and shoot from "ready". It's actually more accurate that way, and a LOT faster. With practice, you can actually THINK the gun on target.