Now that Windows 10 preview is out, and to those who have downloaded it, what are your plans?

Do you plan on installing it outright and use it as your main OS?
Do you plan on running it on a virtual drive?
Dual boot configuration?
Spare PC or laptop set up?
Install it on your best friends PC just for giggles?

Personally I wouldn't mind running it on my laptop in dual boot with Windows 8.1 and switch between the two as needed. Haven't read anything as yet from anyone who's done it that way, but am eager to see what other have done, or are deciding to do.