PowerPath/VE Licensing - ESXi Host

I have a number of ESXi hosts which I wish to license for PowerPath/VE 5.9.1 SP3. The license files have already been generated, and are ready for installation. The network that the ESXi hosts reside on are isolated, which rules out the use of a licensing server, or RTOOLS server, as no connectivity is possible. Is it possible to license the ESXi hosts locally, i.e. in a similar way to emcpreg?

Keep in mind, that RTOOLS cannot be installed on the ESXi host, as it does not support RPM installation.