I was surprised to see that as well, and so far Remby's been anything but aggressive/bitey. I did ask the store people about this and they said none of the litter they had at the time were nippy at all. I'm glad I wasn't put off by what I read online about Nics because the more I hear about them from you and the store (who've had actual experience with them), the more I look forward to spending more time with my little guy.
I'm also going to try to feed conservatively since I've seen a lot about how common overfeeding is for boas - and even if mine's a male dwarf I'd rather not take any chances with regards to size, haha.
Speaking of size, I'm looking ahead to this guy's forever home, and although it won't be for a while I'm trying to decide on a PVC cage size. Initially I was going to hope Remby wouldn't pass 5' and get a 3'x2' because I don't live in a big place, but it ends up I can fit a 4'x2', plus the price difference is only $30 CDN. Is bigger better? On one hand I don't get the impression boas are too active but on the other, more space couldn't possibly hurt?