Just received my pair of BT-12's from Nimrod. Ripped open the box, put them on the stands, and topped them with a pair of JBL VP7215's. The JBL's are compact, high-end, powered cabs that weight about 55lbs each. The end result - awesome.
My initial impression of these devices is they are exactly as described and pictured on this thread. Material, build quality, fit/finish are all first-class. Operation/functionality is, again, exactly as described. Smooth, easy, does what would seem to be a simple task ... well ... simply.
I suppose I could post some pics, but it wouldn't add a thing to this thread as the pics that are already here (and on Nimrod's website) are all you need.
Nimrod did a great job on both the design and the execution of this excellent idea. He was also responsive to my emails and delivered what he promised. My personal thanks to him.
I don't expect any issues with these long term, but if I learn anything new when I get them "out and about" I will post it here.
Oh, and the little laser clamp is clever, as well.