Little, I only blip maybe 1k revs? Tiny little twist of the throttle, I don't know about you mouse mat but I come down hard in the gears as I always leave my braking until the last point unless I am taking it safe (track speaking). And I find that with the big old v twin it really, REALLY smooths out the down shifts and sets you up for mid corner as you are already in the rev range, at speed and know you can slam on the throttle as soon as you come out of the bend getting the most power.
Doing the gears individually like you say taking time controlling the clutch just takes too much time for me personally. Yes it can be done in a brisk manor, but like I said, for me personally blipping just smooths it out and speeds the process up 10 fold.