AFAIK the relevant clause or w/e on the paintball fields insurance is that eyewear must be ASTM approved for paintball activities. Is ESS ASTM approved for paintball? It's not I already checked (I was like "damn" when I found out cause I have to purchase ASTM approved PB goggles for the field in Vancouver now but anything goes at the other field I play at as long as it's sturdy enough).
Anyways, supposedly there's going to be another ASTM standard being implemented for "Airsoft activities" and it's in the works (or possibly in the "draft" stages). I assume it's probably just a cash grab by the issuing institution so that if a company wants their goggles both approved for paintball and airsoft they'll have to pay twice.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE