I have a GAMO adjustable mount, and I have to say that, IMHO, the quality of manufacture is not that good.
I'm not going to use it with any good scope, as I think that this one, at least, would damage the tube when the straps tightened down. They are not centered over the bottom half.
Give it a good look before you tighten it down on the tube.
Just my observation, my 2 cents.