I have heard back from an informal EMC contact:   I suppose we will have to wait for a future version...
Hi,  I have installed the OVF and seemingly successfully installed the plugin.   [IMAGE]  However, when I look in the vCenter webclient, I do not see the EMC VSI option. We have 2 vCenters in Linked mode, and I have 'installed' the plugin to both.  However, it should be noted, that in both cases, the vCenter itself, and the webclient portion (along with the inventory service), are not on the same Windows server.  [IMAGE] I have cleared my browser cache a few times already and logged out and back in several times.  The version of both vCenters is 5.5.0, build 2183111The version of VSI is 6.5.1.15  In the classic client, you can see the plugin is actually installed:   [IMAGE]  Anyone have any suggestions? 
Registered VSI to both vCenters, do not get the EMC VSI option in webclient