Worthwhile if a) you have spare cantrip slots that you don't know what to do with. I've never been in that situation, but I suppose if you multiclass enough, you might possibly get there; and b) you expect your gear, including healing kits, to be stolen or otherwise unavailable on a regular basis; and c) your feelings about the other PCs dying is more "avoid at any cost" rather than "good, the psycho is gone, maybe Pelor will grant me a replacement who shows at least vestiges of common sense."

No, I wouldn't take it.