Idea behind this compact mic holder is great, but there is still some room for improvement.
First of all, this clamp might have problem with attaching to some straight boxes, due to it's limited stretch option (We tried and failed on Orange 2x12 reprobox). On the other hand, you are still able to use it even if it doesn't fit your cab, there is always a way.
Second problem I discovered is the weight of the microphone for adjustable part of the clamp. It's quite hard to keep it at the sweet spot, since the weight of the mic dragging the clamp down to certain position. It'd be nice if the adjustable part was more solid.
Anyway, even with it's flaws it's still very good and handy product