Manual gearboxes: how long till "warmed-up"?

[LotusOmega375D]

For as long as I can remember people have always said that manual Ferrari gearboxes are recalcitrant until fully warmed-up. Gearshifts can be sticky, 2nd gear a no-no from cold, etc.

So how long should it take for them to ease up for optimal performance? Presumably warming-up happens much quicker when the car is actually being driven, rather than standing on the driveway, so should it be measured in miles rather than time?

[LotusOmega375D]

Behemoth said:

I'll be changing to silver-on-black reg plates, too.

Oh no please don't do that. They look awful on post 1972 cars.