They are no more of a "every man for himself" prop firm than Jump is. They trade house money, but work together
There is a prop forum for this type of thing. But I find it very difficult to find what I feel is a LEGIT firm.
http://cryptoprop.io/ I saw them advertise on coinmarketman blog at some point. I don't know if they are legit or not. But just in case someone is interested.