I will never be able to find a pic of it again, but I had seen a TJ a while back that had the dual tube style front bumper, he had sealed the the tubes and had used them for his on board air tanks running off of a modified AC compressor. Points for being creative but I can't imagine "blowing-out" one of those tanks in a collision.
I have been looking at buying a winch in the next few months and from what I have read the biggest complaints are the added weight and blocked airflow, I think this can be said for just about every winch though. It just sucks that I know that after buying a winch I will probably need to upgrade the cooling system, and then I will need new springs for the front, this will lead me to deciding to just go with a lift, and then my tires will look to small, and after I replace those I will need better gearing, which means I will need new axles and lockers. And then my wife will leave me for spending all my money on the jeep
, but then I will have for time the jeep