G
Hi G
I'm just finishing a CRI course - only got the test to do. Go for it, I know you have educational skills already but I honestly think you'll still find it useful.
More importantly you will clarify the slightly grey relationship you have with your checkee. You become an authorised instructor and captain of the aircraft during the instructional sortie, and that carries some authority.
You can't expect the checkee to doff their cap to your other knowledge and experience, but carrying an instructor's ticket should make the job a whole lot easier.