I wouldn't bother with Glaser safety slugs, or the similar products like MagSafe. Not only are they ridiculously overpriced, they have lousy penetration. They would probably produce a very nasty but shallow wound.
In the .380 I also have Hornady Critical Defense, and Gold Dots too. I'm sort of rethinking even those, though, since .380 has such limited penetration ability. I'm thinking about just going with FMJ in that caliber.