Bringing to the top....
So if you don't have Vman, the IVIM data shouldn't be populated by anything. Are you looking to replace that somehow? Some of it you can get using SNMP custom pollers, but that can be a big DIY project.
Here's the docs on what they provide, and you can likely get that Latency value, but you will have to work for it.
If you also had SAM, I'd say writing a powershell script to gather data via the vSphere API would be less work, but honestly if you need to measure performance on on your VMware environment, VMAN is worth the investment.
I hope that helps, I know its not much.