Dear gang,
Using pagella (palatino) for a project here. Unfortunately
texgyrepagella-math.otf has a rather unattractive set of \cal caps;
schola, termes, bonum etc. all use the same and much better-looking set.
So I decided to try and define a palatino math set with the \cal
caps from schola (= termes etc.). Succeeded after some trial and error:
attached are the positive results. Others may find the experiment useful
or even worth wikifying; it's a nice fallback exercise.
Maybe there is a better or more up-to-date way to do this: In any
case, feel free to critique the attached.
You can save a few lines for your font setup when you use the
\definefontfamily and \definefallbackfamily commands.