Just curious, what’s in your saddlebags? I only use my Ortlieb for camping stuff.
FWIW YMMV
John
John, The saddle bags and top case (52L) have worked well until you start thinking 7 day or 11 day long rallies. I like to pack as much as possible for the start and skip stops for supplies like jerky and gatorade and granola and XYZ. So one saddle bag is heated gear, and three or four sets of base layer LD Comforts. Two, possibly three days, and a base layer is done until it sees the laundry. Less if you are crossing the mojave

The other saddle bag has typically held CPAP, toiletries, and street clothes (1 set) and shoes. Top case then was the laptop and all rally related stuff (cameras, rally book, flashlights, tripod, and as much gatorade/food as i can cram in there). The pillion seat was taken up by my aux tank.
My new aux tank will sit at the tail and I have a 32 liter Pelican case atop it. That leaves the pillion open, so I am removing the seat and building a custom aluminum tool box shaped like the pillion with a luggage deck on top of that which will afford space for a duffel or a small pelican case that can be quick disconnected to roll into a hotel. It's going to be a lot of storage capability but I should be able to run an 11 day rally without the need to stop for anything but gas. The 11.45 gallons should let me fuel no more than three times in a day.
I am also seriously looking at a hammock to pack along.
Oh, I forgot the bike cover, gallon water jug, spare gloves, first aid kit, and probably a million other things. Check out the IBA's suggested packing list for the IBR. It's extensive.
B