LOL... I hear ya. We shoot with a couple of the good ones ("L" 24-70 ans 85mm), but guess what shoots as well or better than anything else? A Canon 100mm macro, NON - L. The Sigma gets the job done, but there is a difference in glass.
About those "L people" ... I seem to be making a living just fine without 'em. :p
Very cool! Looks like you've got a similar (but newer) stand to what we have here. I haven't seen anyone else use one like that. Although we don't have the cool arm attachment for those 90 degree angled shots. Looks like a sweet setup.
Had to get a shot before we had the right stuff to mount the gear head directly to the arm, thus the gear head sitting on the med format head, which is now off and collecting dust.
Had a shoot today with it, all from directly from above the 9 footer came in very handy. The gear controlled arm rocks, nicely counter weighted as well.