yes its beatable.
decent amount of weak regs, some good regs like the homey PD but who punt of 40bb's ******edly once every 100 hands or so
. very few fish and very few solid regs.
SO if you think you can beat a lineup like that then jump in, but yea there are guys beating it for like 5 - 10bb.
My results...I played 10k hands there since March 1st. Beat it @ 0.5bb/100 (ev 7bb/100)
I got slightly +redline, STD deviation is higher than my normal bumhunting. and the 2 table cap sucks huge balls. The sample size is kinda meaningless but my "feel" is that yea i can beat the rake, i saw too many regs spazzing out and too many regfish just let me exploit them.
For me, i prefer not to play it, I have to think too much and remember too many villains, versus not think at all and take some fish for 20bb/100 at 200nl or 400nl.
EDIT: Also to add, i don't really have my poker game built around battling regs, for the most part I bumhunt, all the poker study I have done has been around pwning noobs. but I can kinda think about poker and make some adjustments to regs but im not great at this, but my point is that If you do the study around exploiting regs then yea i think this 50z game is crushable...like if you are fulltime pro so 10hours grind a day/every day you could make like $5kUSD/month with RB imo.