Unless the price drops on the Tekin from what Tower has listed currently, I can't imagine it'll sell real well.
The listed prices right now are:
R1 - $195
R1 PRO - $225
R1 BL Combos - $275
R1 Pro BL Combos - $305
With those prices, I certainly won't be interested. However, the R1 Pro is spec'd for 14cells or 5S lipo:
http://teamtekin.com/R1%20and%20R1%20Pro.asp