Unless AFM specifically allows messing with it for x-wind, I wouldn't consider assymetric reverse use.
Don't try this at home!
When I was a young chap in RHS of a caribou, skipper made a steep approach on a strip to avoid actual enemy ground fire. He selected full reverse pitch just before touchdown due we were already half way along the strip. Due to a fault, one prop stayed in forward pitch, with approx climb power, so it was an exciting ride from there to touchdown and for the remaining 700 ft.