Chompers, he is pretty cool. You should go for it. I have zero salt experience and Im what, three months in now? Still three months is still no success story but I feel he is doing great. I dont feed him much once, maybe twice a week.
He has never inked in the tank. Well he did in the bucket when I first got him he would ink in the bucket during water changes. Now the little guy attacks the syphon during water changes!
The only down side is that I cant keep anything with him. So far the only things that have survived is a big sea slug and some very strange looking slug/snail things neither of which I have a clue how they got in there. He eats any fish, shrimp, turbo snails, hermit crabs, etc that I put in there.