Just the advantage in De-Dishing the wheel is lost. with the wider driver needed for a 9 speed cassette.
Correction:
6, 7_ 126, road 8 +is 130 MTB and My Rohloff is 135.
122 would be 5 speed or one.
My 6 speed freewheel hubs got a spacer on the left to 130 then I took out some drive side tension on the spokes .