Hi,
This is an interesting question. But I’m afraid, the answer is “no”, on Mac. Not because of Cubase 8, but because of eLicenser Control Center.
Fact 1) The latest eLCC, you can install on Mac OS X 10.6 is 6.7.1.8151.
Fact 2) The elCC 6.7.1.8151 was released July 14th, 2014.
Fact 3) The very first Cubase 8 licence was generated after July 2014, so Cubase 8 licence is “Unknown licence” for eLCC 6.7.1.8151.
Fact 4) You can’t upgrade your Mac OS X. 10.6 is the latest one with the Rosetta.
So on Mac OS X 10.6 the eLCC doesn’t recognize your Cubase 8 licence, and on newer version of Mac OS X, you can’t run Cubase SX (because of Rosetta). I’m sorry, I can’t see any solution for Mac users.
On Windows, it should works.