Been in the SPLs on reg roads and crazy ones. I wouldnt say theyre comfy AT ALL or even tolerable when road conditions change. I found them extremely jarring. Dr. Kuah himself said he wouldn't recommend them at all if that was a deciding factor. SPL COs are for those who don't care about the comfort, they are still an excellent product. I was just looking over the SPL product line, and Dr. Kuah is a genius and a tremendous asset to the Z32 community. The quality if absolutely undeniable when you have the products in your hand and compare to others. You still have tards buying AMS trash, it looks like you can take a pair of vise grips and rip them at the welds.