gary applegate was showing those off at the bean blossom blues fest last year. a great design! it seems most people have some complaint about the old racks. how they are uncomfortable and move around. not with the harplock. you really can move the mic stand all over with it. when people talk about using a rack, i always see madcat ruth's binder clip get mentioned. this seems to be the same thing. but probably easier to change harps. the only flaw that i see is you are stuck using 1 style of mic. but i guess it doesnt matter much if it eliminates all the other usual problems.