I would think too that a free diver mask could do SCUBA. And agree a SCUBA mask might not be the best choice for free diving.
However, since having this information, and I wonder myself why I did not think of this before, I am doing some research. Now up to now I found only one manufacturer saying something about it. And I can only think that with this mask (it was originally sold as foldable but later they removed that) it is more than marketing. My suspicion is that they started leaking at the windows as the windows are moulded in and might be a kind of plastic as there is no mention of them being Tempered. I base that on the manufacturers information that they distort under pressure. Have a look
here, there is a
Note at the end.
I am now looking at other brands. Anybody out there have any experience with free dive mask in SCUBA?