http://www.pprune.org/forums/showthr...201568&page=13
Belgique's post on this SWA thread (above) addresses the very significant effect that progressive backstick can have upon increasing the wheel-braking coefficient and minimising anti-skid wheel release (for spin-up on contaminated runways).
From what I've read on this thread, no-one seems to have trialled this or factored it into the stopping trial. That seems to be quite an oversight IMHO.
Despite what the nay-sayers have said on that SWA thread (with some really crazy logic such as holding the stick forward to stop the nose rising and to achieve most effective braking), it has always been an effective braking augmentation technique. Used properly it would have probably stopped 50% of airplanes going off the end.
Once in reverse and with auto-braking applied, how could the nose possibly rise? Think of the distribution of weight BEFORE reverse or braking commences. Think spoiler effect. Then think of the strong nose-down pitching effect of both reverse and braking.
Then attempt to argue logically against backstick being an effective measure to increase the weight upon wheels. That would be an interesting argument to see and dissect.