Thanks mostly to Rick Iossi, & others who continue to stongly advise helmet use, I finally broke down & got myself a Gath, with a full-face visor (so I can eliminate my goggles, cap, & sunscreen ).
First impression: Pretty comfortable & light , but with slight visible distortion in the visor . Surprisingly, I didn’t notice the distortion AT ALL except (for some strange reason) on the beach while setting up my lines. Maybe it will end up like all the other eyewear I’ve used, where I nearly never even bother to clean off the dried-on salt-water spots, because it really doesn’t make much difference. Much better peripheral vision than any other glasses or goggles (like wearing nothing, but without the squinting). Even after fully dunking it’s even more fog-resistant than the most fog-free goggles (Spex). It may seem pricey at first, but I’d still rate it overall a better value, better performance, and better convenience than a regular helmet + cap (for visor) + sunscreen + glasses/goggles (not even considering that I’ve already lost one $100 pair , three $50 pairs , & two $20 pairs ).
http://www.murrays.compart number 52-1103 (the 0's for white*, the 3's for large).
*Even though they say white's by far the most popular color, I got yellow (like my impact vest), so I'll be easier for the boardsailors to see through their visibility-hindering sails.