It's a neat touch, but once you get the hang of it, using a bike frame will probably be just as easy. The plastic friction indicator only really works when the wheel is moving in a certain direction and in contact with the rim as it is flexible. If I were designing it I would use something more rigid like a metal ball pointer. The bike mount is very nice. I've used it a few times but I really don't need it, it's more of a cool gadget than a workhorse.
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