that's really good news!Yes, Client Hyper-V in Windows 10 is Connected Standby Compatible....keep in mind that this is still pre-release so you'll encounter bugs....
Mostly used by developers or IT people for testing, development and learning. I personally use Azure IaaS for my VM needs instead of using them locally.Can I ask what you would use HyperV for on a surface? Is there enough disk space/ram to make it worthwhile?
What are you running a virtual machine for? I'd love to know if there's a use I haven't thought of that makes more sense on a Surface than a laptop or server.