Hey Haiiro.
Before I got the Trumpet, I did alot of touring on the TLR and here's what I preferred for luggage. Please note that the TLR has high pipes, so anything that hangs down was strictly out.
Tail bag:
This bag is awesome. It has a base that actually locks on same as, and in place of, the pillon seat and then the bag itself zips on and off of that. Great set-up. I'd highly recommend it.
Click me for the "Tail Bag". It used to be called "Rocket Locker" and had a disclaimer saying they were in no way related to Joe Rocket, but I guess that didn't satisfy the legal avenues.
Tank Bag:
Best of anything I've ever seen or used. I've had mine for 5 years and it's been everywhere I have on the bike, through all sorts of weather. It mounts with 6 magnets and the bottom is covered with some sort of soft, non-slip rubber. I have never had it slip on me and I lean quite heavily against it to take the weight off my wrists.
Click me to see the Joe Rocket tank bag Once again, I'd highly recomment it.