hopster – yes i’ve just received my mtbbatteries ‘V2’ XML (next day delivery) and did a first ride last night.
It has bar and helmet mounts – i went for bar last night just to get out of the door quickly!. Unit is small and looks and feels robust. The light throw on full is impressive. There is a definite centre to the light then a dimmer, but usable wider spread. Because of the massive depth, i could attack all the straighter fast sections of trail full on, but when it got twisty, i realised that helmet mounting may be better, but again it didn’t really hold me back. I only rode for 1.5hrs so didn’t test the 3hrs on full battery capacity.
I’ll get it on the helmet for the next ride. Also, my wife took it out a 5am this morning for a road ride and reported it to be excellent on the road. So far so good, but helmet mounted for mtb use I suspect.