I still use the classic NDS side dismount/shoulder/run/re-mount we learned "back when" from our Belgian coach which requires L/RR braking to prevent just such a nasty "front flip" since the left hand is controlling braking in the dis-mount.

No idea what your dis-mount technique is but have at it and as always, suit yourself

For those who have never raced 'Cross dismounting for barriers at pace and running over them carrying the bike and re-mounting is part of the deal.
It's all done on indifferent/wet/muddy/off-camber natural terrain where traction is "limited".
A smooth technique means lots of time saved/gained over the clumsy.
Not SS/FG but really excellent racing that has produced some of the best bike handlers ever.

Having all machines w/ the same brake set-up regardless of drivetrain flavor is SOP for me.

-Bandera