Sturdy bass pedals, they work fine and look cool.
In my opinion, there is a thing or two that could be implemented.
First: there is no fast way to change octaves with one foot like with others midi pedals
Second: the octave range is quite limited. They should have allowed to reach higher octaves.
Third: maybe it was my pedals, but the transpose function was half step higher than it should.
Yet still, I'm using them with great success both live and studio