Hi there, I was banded on June 10th, and yes gas is an issue, but it's not a big deal. I have never had a problem at work. I find after I eat I am more gassy than usual and just go to the bathroom to explode!!LOL!!
PBing occurs if you eat too fast, too much or do not chew really really well. It can also happen if your fill is too tight. It can happen, so far I haven't. Some people haven't, some have. Everyone is different.
Good Luck with your surgery, it's a lifestyle change you'll be happy you made!