Reverse Thrust on Sanded/Gritted R/W

[Whitehorse 1]

We have started Ops to Airfields and Alternates that Sand/Grit the R/Ws instead of clearing the R/W.( ie- places with temp. well below freezing for lengthy periods and moderates amounts of snow, making snow clearance impractible)

Any thoughts from guys who have experience about the use of idle reverse/ full reverse in these circumstances (B757/B767 size of a/c).

I can see the possibility of "whiteout" but also the possibility of "sandblasting " the airframe.

Many thanks

Whitehorse 1