Depends.
If you can get the chipper close to the tree, and the climber and groundy(ies) can work in sync I run it all the time, only revving down for refills of saws or if there’s some tricky rigging or other reason to lower the intensity.
Sure, if there’s a long drag, then you can stack it for intermittent blasts of the chipper.
But I’ve seen pics of removals where the tightarsed boss insists on stacking then chipping just to save diesel or putting hours on the chipper, and it makes my blood run cold in fury!