I'm in the market for a tank bag and currently have my eye on one of these: Does anyone have any experience with one that they can share? I really like the design of this bag, with it's two-bags-in-one system (the 22L bag can be zipped off, leaving a handy 9L bag). Any other suggested brands / models? Ideally, I'd prefer something with more side pockets, but I trust the Dririder brand and like the design / style of this bag. As an aside, at the risk of sounding stupid, do magnetic tank bags have any effect on video cameras that are left in them?