I just received 5 10mm mags marked "10mm K2," made by Meccgar, and which are intended to fit that gun and Tanfoglio's 10mm Witness line-up, which EAA also imports.
It seems a little odd to me that the 10mm SARK2 mags would fit the Witness. The Witness in .45 holds 10; k2 holds 14. It seems like that would be significantly different grip dimensions. Of course, I suppose there's nothing stopping them from changing the dimensions for the 10mm version so it matches the Witness.
Also, any chance of you checking to see how many rounds those Mecgar 10mm K2 mags will hold? If the Witness holds 10 in .45 and 15 in 10mm, and the K2 holds 14 in .45, I would expect the K2 to hold in the neighborhood of 19 in 10mm, assuming they kept the dimensions the same.