H1/i bike mount question

I use it, I mounted the holder on the stem (which has a rectangular cross-section), the GPS receiver holds very securely and well.
Just to be safe, I attach the GPS to the handlebars with a lanyard, just in case the mount fails :)

I bought the mount to twst fit it, before pausing my intended purchase of the h1i plus.

I had problems getting a tight fit on my 22.2 mm handlebars, but I think they would hold the h1 as the weight of that is balanced.

The plastic mount is not just cast plastic, it is fiber-reinforced, so seems really, really strong