Cool! Thank you for pix and descriptions! I am trying to standarize my luggage solutions for several bikes so this is interesting. On top of being easy with "one system fits all" it is a really light weight solution compared to racks ant two small panniers.
I think at least one of my headtubes is slimmer in the middle becouse of an integrated headset so it should not go anywhere.
I like loading small wheel bikes in the front and low so for sure I am going to remember this!