I quite like them but the downsides mentioned in other posts are true. The specific ones I linked to actually have space underneath the pedal shelf to route cables. About ten years ago I slightly modified the idea and built two boards in mixer cases, that worked OK. These photos are from me building a new one as I outgrew the one on the left.Thanks. IUt looked like it was easy to pack up with a foam-filled matching hard top, but I haven't seen these in the wild. It's possible they just looked cool for the music video (which I attached in another post here).