Foam latex has much less stretch than silicone- and less tensile strength they are in my opinion not durable enough for the industry They rip.
Faom latex also harbors bacteria just like a kitchen sponge
Also because there is less stretch it doesent fit as many people as a silicone mask it is more likely to be baggy or pucker or rip.
It looks like they are around $80+ after conversion and shipping That isint a bad price so you might want to buy a few and test the waters yourself. I have never gotten more than a season (or even a whole season) out of a foam latex mask.