The developer behind Noble, Rofo, has a solid reputation, Noble has been running for a long time (18 months or more, AFAIK) and I've never heard of any scam accusations towards it.
I do like it as a project, on the whole, but it does need to get some more traction.
Still, I'm happy to wait and see how it turns out, thinking longterm.
https://www.noblemovement.com/ https://bitcointalk.org/index.php?topic=402667.0