Just found out that ProLine has come out with some new wheels for us.. And they have matching sets for hex conversions too! Just a matter of places starting to stock them, I've only been able to find the rears so far.

Velocity 2.2" 4WD Hex Front White Wheels
for B44.1 Front
Product ID : 2741-04

Velocity 2.2" 4WD Hex Front Yellow Wheels
for B44.1 Front
Product ID : 2741-02

Velocity 2.2" Hex Rear White Wheels
for TLR 22, RB5 and B4.1* Rear
Product ID : 2736-04

Velocity 2.2" Hex Rear Yellow Wheels
for TLR 22, RB5 and B4.1* Rear
Product ID : 2736-02