As a general point common between most makes of aircraft, I find the use of speedbrake with V/S a) requires more attention thus increasing workload and b) is, for most situations, unnecessary as OP DES or LVL CHG will do the job nicely and prioritise speed, leaving RoD under your control, as opposed to V/S which does the opposite.
Observing from the monitoring seat, V/S + SB on anything but a completely smooth and calm day requires constant adjustment of the SB. Fine if you have the capacity to get it right but often it loads up the monitoring pilot as well as speed wanders down to (or below) flap speed.