(Disclaimer: I work at MS. I do work on windows.)
I currently have modern mix running on my windows 8 desktop. By and large, I've found that the vast majority of the time I'm on a desktop computer, I'm in the desktop mode of win8. Rarely do I find that the metro apps are useful outside of the mobile/tablet/laptop space. Despite all this, I thought "cool this product looks neat" and purchased a license to Modern Mix. Overall I haven't really found it tremendously useful. Whereas before I'd pin my calendar to the side of my screen (one of the very few metro apps I used on my desktop), I now just have it sitting in a window. The mix of win8 window borders with the metro styled apps just makes them look awkward, and I really don't feel like I've been given more functionality despite the increased flexibility.
The one nice feature is you can run multiple metro apps in fullscreen - which is great if you have a large multimonitor setup and if you have a bunch of metro based apps in your workflow. But by and large it's that last requirement that really doesn't make this product worth it for me - I simply don't have a large amount of metro apps I want to use. Are they nice on a tablet? Sure. But if I'm on a desktop I have apps that accomplish the same thing in a more optimized format.
"(Disclaimer: I work at MS. I do work on windows.)"
A minor nitpick: I thought that you call this "disclosure" in English, not "disclaimer"? (I'm not a native speaker, which is why I may be easily wrong, but something is nudging me to ask when I see things that seem wrong to me.)
Disclosure refers to the act of saying he's from MS.
Disclaimer means that you should read what he says knowing that he might have a bias, because he's from MS.
As they both result in the same thing (you need to read what he says understanding he may be biased), you'll see them both used. I usually use Disclaimer, but there's no real reason for that.
A disclaimer is a piece of text a person or company writes to avoid responsibility. In the GPL, there's text saying that the program is distributed without any warranty - that's a disclaimer. If someone sues you because the program broke, you can point to the disclaimer to show you never claimed that it would work.
Disclosure is just revealing information.
That parenthesized remark was disclosure (because the author revealed his affiliation with Microsoft) but it was also a disclaimer - because of that text, no one can claim that the author was astroturfing.