I have them on my old ratbike xt600, front is a 21 inch (I think) and is fine, plenty feedback, nothing exciting either way, and the rear is brilliant on the road, and not bad offroad, but locks up instantly at the least sniff of back brake in the wet (and it's a drum brake). All caused I reckon by the xt being very light, almost too light for the tyres if that makes sense.
However, I've thought quite a bit lately about sticking them on the weestrom, because they wear brilliantly, and I like the 'predictability' about them and I think they'd be much better suited to the heavier weestrom, especially 2 up.
Keep us posted on how you get on with them eh Wasabi, cheers