These are the only pictures of my clip-ons I've posted. Mine are not the Vortex ones (That's Broom). By the looks of it the Vortex ones are a bit shorter in height then mine and would explain why mine don't fully grasp the fork tube.
There's a couple of people with the SV650 clip-ons and those can go underneath the top-triple tree clamp as they have an 'L' shaped design so the actual bars wind up level with the Vortex ones. Woodcrafts would be nice, but I'm sure they wouldn't be cheap
I think Richard was the one that said he was going to try out Woodcraft rearsets, but not the clip-ons. I could be wrong