I’ve not tested the method linked but yeah it would seem like it’s possible via this method.
My lone VM doesn’t need a connection to those drives so I’ve not had a point to.
You could probably run OMV in an LXC and skip the overheads of a VM entirely. LXC are containers, you can just edit the config files for the containers on the host Proxmox and pass drives right through.
Your containers will need to be privileged, you can also clone a container and make it privileged if you have something setup already as unprivileged!
Currently all iOS browsers are safari with custom interfaces over-the-top.