Maybe nobody has tried what you're looking at, but who's to say you can't make them work?
I've never seen anyone just bolt on a set of forward controls and go, everybody makes some personal
modifications... I think Truck Racer made all new control arms for both sides... I followed Frank Smoak's
lead and cut the footpeg mounting bars right off my forward controls, and used Kuryakyn 4050's mounted
at the curve on the lower engine guard and then I used shifter pegs from (?) for my pedals...
I've gotten to like the peg for the shifter, and I'm going to try a whole kuryakyn footpeg as my
brake pedal, I've got most of what I need to give it a go...
This shows the cut-off peg mount, and the 4050's...

This shows what I used on both sides for pedals...

This shows how I think the forward controls intrude into the lean angle, and could
be dangerous in a steep lean...

-Mike