Check Customization status on Windows VM

I'm cloning Linux and Windows VMs from a template, using customization to add NIC, change IP, Hostname, ...
The deployment itself is working fine.
In my workflow I try to check if the new VM is ready to use.
As there is a customization running on it it can take a while.
My current method involves checking the VMs guest obj, and get the ip value.
So far this was working great with the Linux VMs, as they had no IP assigned during the customization run, and network was only started after the final reboot.
So checking the IP was reliable in this case to be sure that the system was up and running, and user can proceed logging in.
However the situation is different with Windows VMs.
It looks like even during the customization run they get an IP.
So my check will trigger this, and continues the workflow.
But this fails, as there will be a reboot or more involved, as customization is still running.

So to come to my actual query, is there a way I can get the status of the host customization from the VM obj, or any other obj?

Start with the VM object and the host-customization status exposed by the VMware API, focusing on Windows behavior during customization and reboot. Check the pyvmomi API documentation and related VM guest-state properties; done means identifying a reliable status or wait condition that distinguishes completed customization from an IP appearing early.