Anyone seen this carb before?

OK I have heard of the Predator before but I know it's not the best for street use and gets pretty terrible gas mileage. This SV1 seems like it's a little more refined so it works for street use but then again I don't know many people who would use a $1300 carb on the street lol...

The interesting thing is the way it meters fuel on the "back" side of the throttle plate, whereas conventional carbs only have fuel on the front side until the throttle is opened enough to expose the boosters to the vacuum on the back side. I wonder if a 4-bbl. could be modified to provide fuel on the back side at all times...? ProSystems claims conventional carbs produce a "split" fuel-air mixture at part throttle due to this phenomenon (they explain it on their site).