This issue is one of the reasons why several airlines do not recommend to use flaps 40 at all, only short RWY or CATIII flaps 40 landings are accepted.
I have been flying -800s for a few years now and wasn't aware of the 'anomaly' relating to F40 selection induced roll. We have now disposed of our mid 2002 and prior delivery models, but never recall having such an occurrence (you surely wouldn't forget it) or remember any colleague referring to such an occurrence. Not to say it wasn't out there at the time though!
With the quote above, what would stop the operator experiencing such an occurrence on an actual CATII/III approach, especially regard to automatic thrust reduction at 27'RA. The 'wing drop' would certainly induce a bit of rectal clenching!! And as for short runways - I always like to see the approach as stabilised as humanly possible!!