I just looked at the Blendr stuff, can you put a Blendr piece on the top and bottom of the stem simultaneously? If so then all you need is an Edge mount to screw on? They advertise a Garmin mount in ad copy but I don't see a picture or any product.

How long has Blendr been available, I know it is more than 6 months and they still don't have a Garmin mount. Seems like it is not well supported by Trek/Keith.