When I carry an auto I always carry a spare magazine, not because I' afraid that the seven cartridges my auto's hold isn't enough. Because generally speaking
an auto has a higher likelyhood of malfunction and that can usually
be attributed to a magazine problem.
When carrying a revolver (SA or DA) I don't bother with spare ammo.
I think a handt SA revolver is a great carry tool. I feel the same about the Bond Arms two shot jobs (although I don't personally own one) and would feel pretty good carrying one of those.
Carry what suits you and ignore the goofballs.