Klick fix bar Bag mounts are able to be adapted to go on seat posts.. I use my Ortlieb HB bag on them..

or do you just want a color match ?

Ortlieb has a suitcase like rack pack http://ortlieb.com/_prod.php?lang=en...&biketoy=trunk

and a handlebar bag with an electrical contact set in the QR for your electronic toys charging current from the Hub Dynamo.

http://ortlieb.com/_prod.php?lang=en...biketoy=handle

& both F&R bags Come off, easily, when desired .