If you put the airplane in the weeds at the end of the runway I don't think the investigation will absolve you of any wrong doing if your defence is, "Someone told me".
Any types I have flown with reversers always limits the reverse thrust capability in relation to total engine thrust. Current type (757) is in the order of 1.3 EPR so the thermal cycle is tame in relation to a take-off thermal cycle.
Weigh the thermal cycle against shorter brake only stopping distance, less brake and tire wear.