Much talk of "Time saving" and "Dragging it in at 250 knots".Assuming an idle descent from TOD to say 1000'agl with no speedbrake the difference between a 2 stage deceleration (ie,back to 250 at 10) and a single level deceleration at say 3000' is most certainly not several minutes as many seem to think.It is realy very marginal.You have a set amount of kinetic energy at TOD and while high speed sure does get the hieght of and increase drag you will need longer to lose the speed.
I would like to see some hard figures but "Keeping the speed up" on an idle no speedbrake approach does NOT save much time at all.