What he meant is you would have to find some larger block of polyuretane to make your own refills because other pads are shorter Which isn´t ideal if you don´t like a lot of trial/error.
There were red as a limited edition I believe http://shop.trialricany.com/?14,brzdove-spalky-plazmatic-crv , but they had the same short wear life on grind
I said that in first reply lol? I don´t know if I´m powerhouse but I weighted approx 200 when I was using it and was prolly more powerful than 99% of guys on this forum. The question is why you wanna use it?
Why don´t you get this one? http://www.trial-bikes.com/rockman-stem-127mm-p-5398.html ,bar clamp is just as easy to use, it´s also forged and I really can´t find anything bad about other than the price tag. It´s even in your country.
Radial lacing is laterally stiffer, but vertically weaker and also weaker in torsion. That´s why there isn´t wheel with radial lacing on drive side(or disc side).
I used wheel for few months built like that, it wasn´t very noticable in either good or bad way, so I would stick to standard 3crossed pattern, no reason not to.