I run coated Ambassador batters over clear Diplomat resos on my Stage Customs, but my YSC's aren't birch. They're the mid-90's vintage with the gosh-only-knows-what-kind of plies that may be birch/mahogany/falkata with the long high-tension lugs.
But, they're easy to tune (for me anyway) and don't need moongel, tape or any other treatments. They sound way more lively than the old Pinstripes I had on the tom-toms. The coating wears off in the "business area" of the most used heads, but it doesn't seem to negatively affect the sound.
I think you'll be happy with them. What are they replacing?