Remember the hoo-hah OnLive cooked over some supposedly fast-and-loose Windows licensing? Well Nivio's been quietly rolling out its own, proudly licensed, version of a cloud-based Windows desktop. Its minimum requirement is the ability to handle HTML5, meaning that a Microsoft-powered OS can be used across iPads, Android phones, MacBooks and everything else in between. Nivio offers up a cloud storage platform alongside a Windows 7-style (it's based on the Windows 2008 R2 Server; same building blocks) OS that allows the user to sync up to 10GBs across devices. What else does it have? Microsoft Office -- on your tablet or smartphone of choice and all licensed through Redmond's very own Service Provider License Agreement (SPLA). The service launched in February, and is currently clearing a backlog of users on its books, attempting to gauge how people are using the service before exploding any servers. It's also started making its first steps in Europe, so we decided to take a look while its makers were in London.