I did a trackday yesterday and like the extender a lot. Feels good to always have a knee locked on it and it works well with my seat backstop. I am happy with it.
I’m actually quite happy with the DP tank grips but this looks the part and I can imagine the front part of the extension as an inner calf support which is a plus.
With the larger protrusion it might offer some thigh support when braking, that’s something I’d like to experiment with.