I have been reluctant to use my magnetic tankbag on my 2017 CB1100EX because tank bags are hard on paint. SW Motech has had its Evo line of tankbags that snap on a tank ring that that mounts to the fuel filler, but with the way the 2017 tank curves down front to rear, a flat bottom bag looks terrible and the one Evo bag with a curved bottom curved too severely to fit. A new line of touchless bags called Pro bags has a model called the Engage that curves down, but less severely than the old Evo Engage and it now fits and looks good. It is an expandable bag that goes from 7 to 10 liters and is a perfect size for my needs to carry a few things on a day trip. I did need to buy the optional 12mm spacer kit to keep the rear of the bag off the paint but it is made for this and integrates well. Twisted Throttle has been the U.S. source for SW Motech parts, but there is now a factory store in the U.S. I think the price of the Pro Engage is mismarked on the factory site because it is currently $50 less than Twisted Throttle's price, but all other Pro bags are a couple of dollars cheaper on Twisted Throttle. The new Pro line has a redesigned lower profile tank ring with magnetic attachment that pulls the bag into position before it snaps in place, and still used a hard attachment that is spring loaded. It is pretty cool.
