I've slammed mine from high to neutral many times w/ no problem. Reverse MVB and 1/4 stick shifter. Just had trans rebuilt...no issues from the builder. Not saying it's good and I don't do it often, just my experience.

CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax