alfisya My biggest reason to install it to have synchronized clipboard between host and guest.
Thanks again for your response. I always enable clipboard sharing for Solus VMs in the VBox settings, but I can't remember actually needing to use that feature in a very long time. Still, there's no reason to enable it without making sure that it's supported otherwise, so I believe I'll add that step to the creation of new Solus VMs when the 4.5 ISO files are released, and thereafter.
That way, if the occasion ever arises that I want or need to share the VM's clipboard with its host, it'll work as expected. By the way, I agree with your appraisal of Hyper-V. I used it with Server 2008 and onward for testing my client/server applications using VMs.