Winding and shutter cocking are separate, but I have changed the shutter speed on mine after having cocked the shutter, with no ill effects.

I've not had reason to change the flash sync yet, as I've never used flash with it (in the 7 years I've had it).

Other than not being ham-fisted with the winding (which won't apply to you), I've found it to be one of the more quirk-free folders.