I'm inclined to agree. Currently debating with myself whether to go for Windows on SSD completely, or go with this solution - which erases the problem of limited storage space, plus takes out the bother or reinstalling Windows + all my programmes and getting Windows to how I like it.
How does it fare with dual boot setups? I know it doesn't support Vista, but I use Vista 32bit for various development work that doesn't like Win7 x64. So how would it deal with a dual boot Win7 x86/x64 setup?