Nope, these guys are flying under the radar for a long time, they're not on whattomine or cryptowarz or anything. That's the reason it's so profitable.
I have gone 2 days without getting a single block, and then got 14 blocks in 1 day. It's VERY random, but averages out to be pretty damn good.

There is a working AMD miner though, but it looks like they deleted it..