For the VFR I've found several ways to transport the stuff I want, and I just thought I'd elaborate on them.
Well, for everyday use I don't need that much. In general I have to take a pair of jeans, a pair of shoes and a backpack containing a laptop.
Like I already stated, I've got this Givi tankbag that can (with a little pushing) contain the pants and the shoes. It's also a good bag to take with you everytime, contains the wallet, a piece of clothing you want, keys, ... for me it's a great size bag.
The only downside I'd say is that when you want to "lie down", you've got your chin on top of the bag.
The backpack then easily goes on the pillion seat with a 40x40 bungee net over it. The mounting points for the OEM boxes are brilliant for that by the way, 4 nice big holes, perfectly positioned.
With a pillion
So, sometimes the OH can go with me and I drop her off at work. The backpack on the pillion then has to go. I have the OEM panniers, and the most important thing I have to say about them is that they DO fit full-face helmets, unlike a lot of reports I read (I bought them thinking it won't fit them because of that). I can easily put the OH's Shark Vision R or my own Schuberth C3 in either panniers. Other than that, they fit great and complete the look of the bike very nicely. A little shudder over 160 but not much.
So, in short, I've got a Givi tankbag, a €6 bungee net and the OEM panniers, and I'm very happy about them. They complement eachother great for various needs. The net can easily be stored under the seat alongside a disk lock and the papers and a wallet for example.
All this is tried and tested at over 200 leptons by the way :).