I recently purcahsed a Surface Pro 3 and reimaged it with Windows 8.1 Enterprise x64. I configured the device to enable Traditional Chinese (HK) and Simplified Chinese (PRC), I noticed the handwriting options are greyed out for both languages.
I searched the language pack website: http://windows.microsoft.com/en-us/windows/language-packs#lptabs=win8 and it led me to "Change your language or keyboard": http://windows.microsoft.com/en-us/windows-8/using-multiple-languages
I checked the input options for both Chinese languages under Control Panel > Language > Language options, it showed "A language pack isn't available" under Windows display language.
Please kindly advise and thank you.