i think the reason they cant make it P60 competible is because the T1/Tk10 has a deeper reflector. Making it P60 competible means that they have to be satisfied with whatever designs a P60 can offer.
further more, the heat sinking on the T1 look far superior to what a P60 can offer IMO
Crenshaw
Will wait for a 18650 version of it and a review. But if a 18650 P7 version will come out, I will most likely buy it right away.