[otrs] Multiple Customer::AuthModule?

Hi. We use LDAP for the majority of customers and a local OTRS DB for a few customers not in AD. I would like the non-AD users to be able to log in to OTRS and view their tickets. Is it possible to define multiple Customer::AuthModules in Config.pm? I tried to postfix them with numbers, like $Self{'Customer::AuthModule1'} but that didn't work at all. If I define multiple $Self{'Customer::AuthModule'} statements, only the last one works. Predictably. -- Lars