I actually went with a GEC #15 Navy knife in the end. It answers my problems in the following ways:
a)The bail is useful for pulling the knife out of a pocket or sheath even with reduced pinching strength, I can just hook a finger in the bail and pull.
b)The nail nick is far forward giving easier opening because I have more leverage on the pull (no idea what the proper physics term is, sorry).
c)The blade is so far out of the handle that I can pinch it open, or half pinch half pull on the nick even with weak fingers.
d)The half stop is really useful, especially when closing.
e)The lack of tip means that I don't have to worry about my fingers losing grip when opening and sliding over the tip and getting sliced. The design of this blade is such that with the correct angle I can still easily pierce into crispy bread for example.
f)The bail sticking out of the back gives a more secure 'feel' in the hand of what is actually a rather small knife. That was a nice surprise. Gives somewhere for the pinky to sit.
Oh yeah and I know it's not a good seller and there are loads still around but as far as I'm concerned, it looks incredible.