clar you bring up a good question.

I would definetly peel one off to a half pot bet with a caller. Also in the hand you describe a high card on the turn does not totally trash our hand. a Q or J gives us a straight draw and another high card that does not pair the board that is a flush card gives us nine outs. You also have any 4 for a wheel. So I call.

I am sure someone here plays more PL omaha than me and could answer this a little better but I think your odds are too good to pass up when in reality in the situation you describe there are a lot of good cards you can hit on the turn. The beauty of backup is that your opponents might be counterfitted on the turn or river when your chances of that happeneing are much smaller.