Gun-Control jellies! What do you think of civilians carrying less-lethal weapons for their defense? (I suppose that anti-gun-control jellies can chime in, too.)

The TASER is one such device, as are chemical measures like mace and pepper spray. And you’ll see riot guns around, wielded by police who are trying to control riots. And there’s rubber bullets, that thing that makes the horrible noise, and that other thing with the microwave beam.
In the last few years, FN (heir to the fabled J. M. Browning) produced a glorified paintball gun, about as big as a full-sized pistol and used accordingly. The slugs supposedly hit like a fastball – powerful enough to kill if it hits you in the head, but might only crack a rib if shot at the torso. The idea is to get your attacker to start considering other ways to spend his time.
FN’s is the only one that I’ve read about; there may be other companies trying the same idea.
Assuming that we penalize reckless or non-defensive uses (using it on the guy who cuts you off on the freeway, for instance), would you be comfortable with civilians carrying these things on the streets?