If they hit that mythical $199 price point which is rumored (unlikely) and it ships with Office RT, then there is no better tablet proposition out there.
Now, most of them won't care (and probably figured out that Office wasn't actually very good at its core functionality, like word-processing and creating presentations, compared to cheaper, easier-to-use alternatives). In any event, the strangehold MS had over the enterprise where even people who didn't want Windows were forced to use it, is broken.
So... dream on.
Fact is, even Surface won't be as mobile as something that fits in your pocket - and I seriously doubt Microsoft can or even wants to make (perhaps a stripped down) Office into a $10 smartphone app.
(It's $499 if you want access and publisher but most people don't)
Guess this is when you get a VPN.
I'm interested how exhaustion of rights works in these situations can one of you [hypothetically] purchase the download for me and resell it to me in the UK?
If you transfer it first to your UK server then presumably there would be no import duty or VAT to pay as it's a personal transaction?