Yes, I have worked quite a lot with VLK keys. As a matter of fact I am writing this post with a volume licensed Windows 8 Enterprise. I have also set up several KMS servers.
Willing to bet
? I say this: It is not possible to activate or use a Windows 7 (any edition) using a Windows 8 Enterprise product key, whether a VLK, retail or OEM without some actions that are clearly against EULA (= hacks and cracks that violates the EULA).
I know how to setup a "fake" KMS but that already includes actions very clearly against EULA, and can not be recommended as a valid method to be used by a legitimate business.
If it is possible and can be proven, I will travel to your home town to buy you a whisky in a pub of your choice. This will happen latest August 2013 (have to think when I can take a break long enough
If it is not possible, you will come here to buy me a whisky.
Is it a bet?