Hi Mike:
Now that you have a bike, I hope you can come with on one of these rides someday! And thanks for the compliment on the ride report. While not a review yet, it gets all the “stuff” down before the formatting for the review to come later…
And about those excellent cases that came as an accessory on the 1200 GS. I am not sure who they are made by yet but have a request into BMW for more information.
This is one of the side cases removed and lying on the ground. Both sides and the top case can be expanded and collapsed in the exact same manner.

The case locked in its most collapsed position with expansion lever secured.

Expanding the case with expansion lever in mid-position.

Case is now expanded to its maximum volume and the expansion lever is secured.
Wayne