Bevan,
Worth a try. I think that if you glue the lenses to the faceplate (on the inside, convex side pointing inward towards your eye) it should work. There are optically clear epoxies, which are used to repair windshields, that should do the trick. Alternatively, if you want to make stand-offs, 3/4" PVC pipig looks like a good candidate as part of the solution since its inside diameter is just shy of 22mm
If it works, that would be the most elegant mounting system proposed so far and if the frame has some give (like a regular mask), then it would take care of the issues that are raised by small, stray bubles in the mask -- the mask would collapse inward a tiny bit as the bubbles compressed, rather than sucking your eyeballs out of their sockets like a rigid structure would.
As an alternative, you could just use a regular mask. Flood it, pinch off your nose w/ a clip and viola.
My efforts are on hold for a little while due to some other recent purchases
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