I sleeve, and if it is E-6, I take to work and photocopy it.

(you have to fiddle the lightness control, and leave the copier lid open) to make a very poor quality, but fast and cheap, but identifyable 'contact sheet'.

I then write note on this 'contact sheet' and stick it into the filing binder in front of the neg filer sheet just as though it was a contact sheet from a c-41 or b&w neg lier page.