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I believe answer is no for at least Neutron  OVS&VLAN or OVS&GRE setups
File /etc/neutron/plugin.ini -> /etc/neutron/plugins/openvswitch/ovs_neutron_plugin.ini  (on CenOS 6.5 and Fedora 20)
has entry 
tenant_network_type = gre 
tenant_network_type = vlan
for OVS plugin (my experience is obviously limited). So you should have two OVS plugins on the same Neutron Server and separate /etc/neutron/plugin.ini for each plugin.