Hello from Germany,
I installed Windows 8 32-Bit OEM full- version (normal not Pro version) on my Wetab Tablet (equal to ExoPC Slate). All Win 8 Preview Versions worked great with system. (It's a 2-finger Touchscreen)
BUT Windows 8 final detects the touchscreen just a mouse (and not as a Microsoft configuration Input device as on other systems ) - i can not use the gestures. In the "PC Info" it's said, that there is no "Pen and Touch" available on this system - but it was available with all preview Versions - so it must be a software problem.
I tried all drivers I could get (specific and generic ones) - no different result.
The strange thing is, that the Windows 8 UPGRADE version works great- even if it was a complete new installation - and without any problem - all gestures work.
Hope you can help me (and many others with the same problem on different computers).