Shy...
In the dim parts of my alcohol ravaged brain....remains memories of lots of knob twirling and palavver amongst the HP and the NHP (PF or PNF, etc....) when doing a missed approach whilst IFR in the UK....throw in a handover of controls during the process and then resetting three altimeters to the correct settings in itself was a darn chore subject to some mistakes.
At least in our (and our Southern cousin's) world....we use the one QNH setting at the airport the approach was made at...it is the same on both altimeters ....no need for three here....and life is much simpler.
All obstacles are based upon MSL data and also show AGL heights....makes it all very simple even when looking at enroute terrain and obstacles....