Found a couple of interesting and informative threads re PowerPath/VE at the VMware Communities. some are older....
Discussion: EMC PowerPath/VE with vSphere 4 Enterprise
Discussion: PowerPath/VE install to vSphere 4
Discussion: vSphere and PowerPath/VE - Maximum LUNs to a host and maximum paths to a LUN
Discussion: PowerPath/VE 5.4 SP1 now available - Tracking issues
Feel free to add links to valuable threads to this string or create another. There are tons at VMware Communities.