blueplume,
Absolutely correct!
Sorry for not having been too clear here. As stated in my post: "provided enough thrust is available" - meaning enough to hold up the full AC mass AND accelerate it vertically.
The example was meant to illustrate the movement of the CP with increasing the AoA to more than the max CL AoA thus stall AoA as I think the CoP cannot move backwards indefinitely and that is exactly what would happen during this manouvre.
As for the vertical flight it is not contrary to what I said but you are right - in this case the AoA on the wing must be slightly negative as for the wing to produce ZERO lift. This is the reason why I stated "climbing in a straight VECTOR" in order to emphasize the flight path and not the AoA associated with that manouvre.
Seen it myself MIG 29 and F/A 18 D on airshow - makes you go
