Once again, thanks a lot Marco and others, we have now a good thread going for the luggages.

I'm convinced about the support for the YBR 250 and the trunk. Now 'm waiting for Marco's opinion about the "Givi" windshield, especially if there are some turbulence on the helmet at "cruising speed" (80 to 120 km/h).
About the saddle bags, I know I'll take soft ones, but which ones I do not know yet... Many possibilities in China or in France, but may requirements to fit too, in terms of reliability, volume, clearance with the exhaust, comfort for the pillion's butt, comfort for the pillion's foot rests, etc. .