I'm highly optimistic.
Possibly even more useful than carrying protection, however, is carrying something for when you've passed to point of protection and now need to go on the offensive: Not Plan B, but a small packet of at least 2 painkillers and a few Band-Aids. Painkillers to soothe all your little roughnesses in life, and Band-Aids for everything from paper cuts at work to covering developing blisters from your cute yet painful flats. Truth be told, I always end up reaching for those two things more than the condoms.
Now, if only I could find a way to fit a shot of vodka in there for those times you need either liquid courage or a bracing moment, we'd be in business.