Yes it was a good tip (but sadly not a full solution), here for anyone else who wants to see it:
https://community.avid.com/forums/p/134191/764256.aspx#764256
Its never really been a problem for me before – I’ve just done it the long way – its only because I’ve just done a project on Premiere Pro that I’ve noticed it makes things quicker if you can type a clip description while its playing. It would be a good feature addition to Avid if you could type descriptions on the fly during playback.
Olly