N1K or DVS info on a ESXi Host

We are trying to find a way to see if an ESXi host is on a N1K or standard switch as we are moving all systems to N1K and need to verify it was completed.  We thought of using the Get-CDP but since we are using Cisco UCS blades it always comes back Cisco Nexus.  Does anyone have any thoughts on how this can be done?

thanks in advance.

Matt