Just made the choices a little clearer, I hope.
Sunglasses definitely provide some level of protection and are what I predominantly use during water fights. They do count as a form of light safety equipment, but such a definition likely works only amongst small groups and wouldn't pass by a formal safety inspection board. I've edited the choices so the phrase now reads "certified safety equipment" to suggest that equipment used needs to be tested by some safety board for its intended use (i.e. how workshop goggles are certified to protect against most common construction dangers to the eye).
For the current general level of stock, modded, and homemade water blasters out there, sunglasses offer a good amount of protection. That said, they aren't always optional, particularly during fights in darker environment (i.e. deeper woods) or during night battles.
What I wonder is whether members would be open to wearing things along the lines of swimming or squash/racquetball goggles (i.e. goggles with a strap) that are less likely to be knocked off one's face if hit by a more potent stream. For water fight eye protection, I'd want something that could breathe to avoid fogging, of course. While I prefer to be able to have a water fight without the need for eye protection, if given the option of potentially having more potent blasters at the cost of needing to use some sensible protection, I think I'd be willing to strap on a pair of goggles and wield a CPS20000 around.
I'm primarily curious whether others also feel similarly.