I don't know that this specific scenario has been covered.
I've recently picked up a second HE just for dev and may migrate some of my IP stuff over to it. I have Hub Protect on my primary hub. If the primary hub fails, would I be able to submit the claim, but use the cloud restore option to immediately migrate to my secondary hub?
Yes. You can restore the cloud backup on your spare hub while waiting for the replacement to arrive, then restore again (same backup) when the replacement is delivered.
We make every effort to ship the hubs from our regional partners to avoid users paying for additional customs fees and to expedite delivery. Users still have to pay the local shipping fees via our online store.