...the lens shade is attached to the lens you can use it on every tech camera.
Had I known about that insight, I would have done exactly as you. I use the Lee's WA shade..
I'll also forward your wish on DB mount. If Sinar can give this guy access to camera files for shutter timing for their DB to fine tune if needed for various cameras, surely Sinar will entertain (if NOT already in the pipe line) your wish.
NB: He held the WRS and admitted that it is very compact and ideal. He was reserved about the lens mount in comparison to how Sinar mount theirs lenses. I told him that the only ONE improvement is to have a lock on the rise/fall/shift. I always shift the rise/fall gear when hand held. I now need to make an effort to double check as part of my initial check list.
Same as you... I will stick with my RS for the time being.