Ford doesn't require the GM dexos spec so i wouldn't worry about it. If it is "only" dexos1Gen1, it will have higher Calcium and possibly some Sodium which in theory, is not desirable in (small displacement) Turbo Di. But i've yet to hear of a 2.7T Ford having oil related issues and also know there are many thousands of these running on Motorcraft without issue.
We've owned the 2.0T-GDi in my signature since 2011 and have run far more non-d1G2 / non-SN Plus oils than the new specs without concern or problems. To be honest, the oil we used most was Valvoline Synpower which was also a high Calcium/Sodium oil.