Agreed. I guess the 'take-home' message is that, when it comes to non-aerial functions (terrestrial locomotion, feeding, mating, etc) the forelimbs and hindlimbs were employed opportunistically. It probably also varied between different pterosaurian taxa and/or with ontogeny. But for rapid progression on the ground (or as 'rapid' as a pterosaur could get) quadrupedality was probably the general rule.
I'll drink to that. --Mike H.
As would I. JimC