As they say, one swallow does not a spring make!
The nexus range so far don't even support global 4G!
I don't know the state of 4G in the UK but here in Australia and also the US we have multile 4g networks to choose from and the thought of buying a new handset and being stuck on 3G for 1-2 years is ludicrous!
We have ONE 4G network and it's crap too. lol