Determing how many ESX hosts PowerPath/VE is installed on

We are using "served" licensing for PowerPath/VE.  Our VMware admin has been installing PowerPath/VE in our environment.  Since the license server loses track of what it has licensed over time, I need a way to "easily" identify which servers have PowerPath/VE installed.  Anyone know of a way to do this through ESX WITHOUT going to each individual sever manually?

Thanks,

Will S.