Has anybody tried modifying the issue patrol pack to fit zips for bergen side pouches? Does it work? My other option is to buy one of the ready made versions from Silvermans, but i'd rather save the cash. Also, has anybody come up with a better method of attaching the issue Camelbak to the patrol pack other than simply stuffing it under the lid? I wondered about getting clips sewn onto the front as per the issue bergen. Anybody tried that?