Not entirely sure what the whole story is with the Humble Originals, but I noticed that Raw Fury is the publisher for a few other games that have ended up in Humble Monthly bundles. That may be an amicable relationship - I’ve noticed a number of their other originals are on Steam in some form or other under various different publishers. I hope it is an amicable relationship, at least; I’ve quite enjoyed the weird grabbag that is the Humble Original releases.