To date I haven't backed a KS, and the Flask fiasco pretty much guaranteed I won't be in the future. I've been following the backer comments and it seems like KS doesn't really hold companies liable for violating their agreement. It's a shame, and unless AD can prove this isn't blatant negligence/fraud you should be getting a full refund.
Wrt the Niche, it looks promising! I'd be curious to see how grind consistency stacks up against others in its class, but what I've read so far has been pretty positive. I'm with you though..it's pretty expensive, so probably best to wait till it's been out for awhile before pulling the trigger.