[Seb86]

There are not supposed to rake uncalled bet as if you raise and steal the blinds they dont rake.

There is no 1/2 omaha game, I dont think there is omaha table anyway, omaha is part of a lot of mix game played at 5/5 and higher (along with omaha 5 cards, hi low, HE and courchevel which is omaha with the first card of the flop revealed pre flop).

There are sometimes a 2/4 tables with rotation HE PLO. I dont think I have ever seen a table only omaha at whatever stakes. I guess it can happens though but pretty rare if so.