Windows Live is deep
If you're in a windows environment, the cloud may be able to be stored on your local company equipment still even though you're using a cloud service like skydrive. Windows server 8 has a lot of baked in cloud services like this that will likely let you redirect this behavior via policy in some way.
Still, my main reason to use my home machines as guinea pigs is that I can be highly experienced in the product before it even hits which gives me a leg up in my career. It also enables my company to be more swift and move with the times quicker than most because I'm keeping pace with the technology rather than waiting for others to work out the kinks.
The old days of waiting for SP1 so all of the bugs are worked out are gone. SP1 for Windows 7 was completely insignificant and those who waited gained nothing and missed out on a great, stable OS.
