Was reading this thread on the Daemonic Legion and saw that Birona's Timewarp had been FAQ'd from movement to movement allowance.

Does this mean it's double M up to max 10 (for a 20" march, 10 being the max of characteristics of a model), unless random movement?
What about models with the 'fly' special rule, does it affect them other than on the charge (and perhaps not even then if max 10)?

They say that tournaments play it as twice the movement allowance even if it brings it over 10 (Knights getting move 16 instead of 8 for example, marching 32"). What do you guys think?