I am testing some IBNS 2.0 configurations on some 3750x & 3560X series switches running the latest 15.2(4)E10 IOS image.
I have everything working except the critical voice vlan feature. The C3PL policy has a class for "AAA_SVR_DOWN_AUTHD_HOST" (match result-type aaa-timeout & match authorization-status authorized) that actives two service templates - one of these is "service-template CRITICAL_VOICE_TEMPLATE" that should activate the critical voice vlan feature. The switch accepts the commands, however it doesn't appear in the configuration.
I have a 3560CX and with the same configuration it appears in the output of 'show run'.