Thorn Cycles; SJS Cycles

Rohloff have no issue with it;

“generally 1x seems to be unaccepted by the majority of our customers as they believe the wheels strength comes form the crosses themselves. As such, although the best lacing pattern is often 1x, we state 2x in our literature for wheels of 26" diameter and above / 1x for all wheels smaller than 26" diameter.

A 1x laced SPEEDHUB wheel creates almost the same spoke angle as that created by a 3x derailleur wheel (see PDF attached)

You are permitted to use a 1x pattern for all wheels if you so wish this is not a problem. Wheels should never be laced in 3x or 4x patterns as the spoke nipples are unable to angle themselves enough to accept the flatter spoke angle. This cases spokes to kink at the spoke/nipple join and they will break at this point.”