I have fed ReptiLinks to both BI's and BRB's. As I said in the other thread, once you get over 25 grams I would recommend switching over to whole prey, as the wrap/twist action that a boa uses to constrict its prey will rip the longer links in half. The links at 25 grams and under are too short for the boa to get a good enough grip on it to tear it apart.
There's no reason you couldn't feed the meat/veggie mix to a snake unless you're worried about the smell putting them off. The meat-only ReptiLinks don't have the offal (stomach and intestine contents) that a snake would normally get with whole prey, so the occasional omnivore link may not be a bad idea for them.