very clever design and implementation!
"The best part is the pilot hole is parrallel to the surface of the wood instead of 15degrees like with a KREG jig, so there isn't a tendancy for the piece to slide upwards while screwing it together."
are you using the square drive kreg type screws? how well is the driver bit staying engaged in the screw head, with the screw being straight and the drill driver being at an angle? I know I get slippage even when I get the drill at a slight angle to the screw direction.
yes, very clever.