The keys are different than mce so it wont work. I thought about doing it but couldn't find an untouched tablet version. I've never actually seen/used the tablet edition either.
You have to replace the pidgen and dpcdll files, (from the vlk_to_oem) and edit the ini file to OEM , then it installs fine using the SLP Tablet key. It will then request disk 2, then request back disk 1 called "Media player".. And then you have to use oemscan or also replace the oembios files for activation.