Thread Drift Alert!!
No, I thought not--the pension is not worth sacrificing for ANYTHING.
.....this often gets mentioned but ain't so! For a 4* his pension is half pay (ish) whenever he retires ..... of course the pension's not as good as the pay!
In fact (I once shared an office with a P1 expert), once earned (whatever that means!), it's almost impossible to lose your pension - even after a Court Martial for something nasty. IIRC it needs to be treason or similar to lose the pension, "mere" armed robbery or rape (for example) wouldn't do it.
Back to CAS........
I once was invited to ask a CAS a question - I asked: "Suppose you are taking your undergraduate godson out to dinner. How would you pursuade him to join the RAF? And if you couldn't - why not!"