Why not klick klicken.....because coming out of automation usually results in a huge F'Up....especially in a busy traffic environment with a high rate of climb. The ALT hold VS method works well but it pays to brief it before hand, the trick is to wait for the nose to drop and the VS to come down, otherwise if you try to engage VS too early it will just recapture again. Freighters also have a higher flat rating compared to the pax aircraft so there can be huge amount of excess power even at max derate. Min clean can be above 250 at heavy weights, but they may have been empty.