I had the Shoei hard bags on my K6. 4 long tourings in the 80's.
The were almost waterproof.
But all day long often raining very hard in high speed did not keep the water out.
I packed the clothes in pastic bags that went into the bags.
Handy when parking for night bringing everything into the hotel or tent.
My Shoei bags really small and chrome tubing rusty. I really miss them, regretting I gave them away instead of restoring them.
They had an aerodynamic design.
Photo taken July 1985 in North Italy. Lots of rain thru Sweden, Denmark and Germany. Sun south side of the Alps as many other summers.
A CB750 does not mind rain.
Tank bag helped to catch wind from my body in high speed.
Often 160-180kmh on speedo with 2 persons and lots of luggage. Back then 836, ported head and cam for a better cruiser.
Yes, no tacho. I smashed it early 1982, did not miss it enough to buy a new one until 2013