Works pretty well...
I've got the CP installed on my Slate and it's been solid. Metro is great for on the couch and the desktop is still there for all of my traditional apps. I'm a consultant with about 30 clients so I stay pretty busy and I haven't run into any issues with it besides some device incompability (Verizon Pantech UML290 LTE Modem) but that's just because the software's in beta and not really a limitation of the software itself. I use this thing with Bria, my bluetooth headset and our Voip system to stay in touch. I run our Instant Messaging software, use the native metro mail client, a bluetooth keyboard and mouse, a mini-hdmi to vga adapter to connect to onsite monitors or my 14" usb monitor. Of course, you could do all of this with a laptop but it's insanely convenient to have a single device for work, home and everything in between. Windows 8 for that purpose is amazing...a true value for someone caught in between wanting a tablet, a laptop or a desktop. Again, invididually, each of those devices, apart from a tablet because the slate is essentially a tablet, can be more effective for other purposes but again, if you want 1 device, Windows 8 makes it happen. Now, on a desktop or a laptop, the main benefit from 8 apart from storage spaces, SkyDrive and some performance improvements is that I can use the Metro apps I'm familiar with from my slate on my desktop now and don't have to scavenge for slate just so I can use one app. The one's I constantly have to hunt for are weather, calendar, etc and yes, you can use desktop widgets or the web but it's just nice and easy to have the app with you everywhere. It's just convenient.