I like carrying a toolset with me in the swingarm bag but a 1 3/8" combination wrench is too long to fit.
A locking adjustable wrench might work but with any open ended wrench you only get "grip" on two sides.
A 1 3/8" socket wouldn't have room for both that and a 3/4" drive.
The best answer I found was a 1 3/8" combination wrench - saw off the open ended side at whatever length will no longer fit in the tool bag - include a pipe section in the tool bag to put over the cutoff side of the wrench for added leverage.