Originally Posted by Shahmatt

Thanks Charles. But maybe this is not the ideal solution for my particular beat. I think I will still have to take the rack off for storage in the office as space is not sufficient. It's not going to be easy to remove pannier, remove rack, and fold the bike on every work day. So something more simpler I think.

I've also found this:

Basil BasEasy Carrier


The rack comes off at the press of a QR, leaving the arm attached to the seat post. It's not designed for use with panniers, but still accommodates anything with hooks. Hmmmm... I wonder...