Yes,
HP, I agree it is a good topic for discussion but I am not sure we have uncovered anything new since the last thread, have we?
I still think the legislation at ENR 1.7 says it all. However, the concept of a Transition Layer between the TA and TL, where you have one reference in the climb and another in descent, has always been a thorny one. That is why it is generally not allocated as a cruising altitude/level, simply to try and avoid any ambiguities.
With regard to the stand-by altimeter, my apologies if you found my earlier comment "arrogant" - I didn't mean it to be so - but I do believe it is good practice to set QNH on it during the climb and descent. I am certainly not suggesting contravening your SOPs but, if it were me, I think I might be minded to suggest a relevant change in my Company SOPs, purely for the reasons we have discussed.
JD
