I think it's worth it IF one works with off-camera lighting outdoors a fair amount like I do.Very Droll!
Maybe I should head S wards now you've done all the testing!
Not that it isn't a great system without that feature, but the CS lenses and 1/1000 sync puts it over the top for me. I did over 200 shots with a Profoto B600 AIR this past weekend, and the fast sync saved my behind.
- Marc