I am considering an effort to bring this product to the lawn service industry. It seems like it would be beneficial to someone working outside and on the move all day. Please let me know your thoughts - would you use one or not? Is it a stupid idea? I would very much appreciate the feedback - to help me decide whether to do it or drop it. For those who are not familiar, Camelbak is a water bladder inside a small insulated backpack that holds upwards of 70 oz. of water. It allows the wearer to carry water with them all day without being in the way and it leaves the hands free to work. It was invented for bicycling, but has since been picked up by a lot of different users, from firemen at the World Trade Center, to Special Ops guys in Afghanistan. Thanks!