I defer to your acknowledged background in these matters.
However, I've know several pilots without engineering tickets who were more than competent in runway analysis. The mechanics of the thing tend to be more boring than anything else. The interest lies in getting the obstacle data right .. although that, too, is becoming easier with improving technology.
Where the typical pilot might start to run out of steam is in the routine performance work associated with operational optimisation and so forth.
On the other hand, it probably makes more sense to have engineers (preferably with piloting backgrounds) do the RTOW work ?
At least three such in the PPRuNe fraternity come to mind.