Yes, but in the actual situation I have unmet dependencies to kernel 4.8. In the medium term view omv3 always uses a more current kernel (bpo) as the guys like me using the proxmox kernel (lts) under omv3. I think this can lead into other issues. Hm..., maybe I understand something wrong here.
I use the proxmox kernel on two systems. No problems there. The proxmox kernel does use different firmware packages than the 4.8 kernel but nothing that can't be easily fixed from the command line. What are your unmet dependencies?