I am pretty sure all of the gossamer, SLK and k-force chainrings are intended for use with either 9 or 10... it wouldn't make sense to manufature two different widths of chainring teeth to accomodate a tiny fraction of a millimetre difference between 9 and 10 speed shimano chains.

As another example if you look at separate Stronglight chainrings in various sizes, 110 or 130mm BCD, they all say "9/10" printed on the side.