Would I loose enough weight if I had a gastric banding operation? Or is it only temporary?

Yes and No. Permanent weight loss depends not on the tool that gets you there, but on how you change your life to go with it. The band will be a great weight loss tool, but if you do not change your lifestyle - as with any weight loss operation- it will be temporary. This is not just an operation to lose weight- it is a lifestyle change.