auth type as check item in users file

Hi, I'm trying to figure out how to check to see if the auth type is mschap in the users file. I can find tons of help on setting the Auth-Type, but not a lot on how to compare it. Additional background info: I'm running 802.1x with two auth types, certificate based and mschap. I have a default (meaning, no other checks performed) users entry to assign anyone who authenticates but doesn't match a group entry further up the file into a specific vlan. However, if I'm going to add in certificate based authentication, these will also hit that default setting, and I don't want it to... I want the certificate based authenticators to not have a vlan assigned to them by 802.1x.