I was on my 6 week, wine with lunch, 320 course in Toulouse in 1993. I was taught Airbus Philosophy and one of their standard climb modes is v/s. I think it is because the 320 was designed to be economical, the designers accepted that at higher levels, the thrust would be adequate as opposed to excessive !
So, here I am in 2006, I still use v/s as a standard higher level mode, but with a sensible brief to the F/O or other Capt because the 320/321 uses it's energy far more effeciently in v/s than in managed climb or in open climb.
You have high and low speed protections, the aeroplane will not stall and it will not exceed it's vmo/mmo. Understand Airbus Philosophy and fly the aeroplane how it was designed to be flown
