I had one in a standard T3PA. Mine disintegrated along the grooves after only few weeks of use. Their support was really cool about it, sent a replacement right away, which my local post "couldn't deliver" to the same address they could at the first package... Duh! As paying for re-postage would have been half the price, I got a refund and continued to use the faulty one.
It did give a nice feeling, not up to load cells though. But you could modulate the pedal fairly better, especially during trail braking.
Then one morning I was calibrating my pedals and the brake snapped in half. The standard T3PA material can not withstand the long term forces it seems, if it's under the pedal (at spring), not behind it (conical mod).