I do not believe that the option is very flexible in regards to whether or not exceptions can be made on the topic of paintball masks. The only true way to find out would be to contact your local field and ask. In the mean time perhaps a local player can share what info they have on the subject with you here now.
As for face protection options, things have not really changed. Mouth guards, shemaghs, balaclavas, paint ball masks and neoprene face guards are still used.
A new addition has recently pop up, its a made by a company located in Europe at this time however I believe their are other sources out there that one can acquire a similar item.