I have the Jols and they are awesome, but obviously he has moved to OZ now so hard to get hold of.
I have mine on DMR V12's and they were so grippy i ended up removing all the pins bar one on the top of the pedals. Pic taken before i removed the pins
This chap is making straps that are a cross between Holdfast and JOL - good price too at 20 quid a pop
http://www.dualismstraps.bigcartel.com/
I have the Jols and they are awesome, but obviously he has moved to OZ now so hard to get hold of.
I have mine on DMR V12's and they were so grippy i ended up removing all the pins bar one on the top of the pedals. Pic taken before i removed the pins