I got myself a U30GT-H and want to share my experiences of it with the latest CM10.1. If there is a demand for easy to use packages and instructions for this device, and developments on the CM10.1 image for rk30board, I will create those.

What to install in the image:

• Base image: 1.3.3 http://crewrktablets.arctablet.com/?wpfb_dl=1041
• Replace kernel: http://crewrktablets.arctablet.com/?wpfb_dl=812
• The ClockWorkMod CWM recovery image included works well, no need to replace

What to install in CWM:

• Format internal NAND fix (otherwise your ~27GB internal storage partition will not work): http://crewrktablets.arctablet.com/?wpfb_dl=920
• HDMI settings fix (otherwise HDMI settings will not show up): http://crewrktablets.arctablet.com/?wpfb_dl=1053
• IntSD to NAND fix (otherwise Android thinks your microSD card is internal): http://crewrktablets.arctablet.com/?wpfb_dl=485 (not mentioned on the CM10.1 on rk30board page)

What works:

• Hardware accelerated video playback 1080p
• Wifi
• Most other day-to-day functions

What does not work:

• Device encryption (not even enabled)
• Bluetooth will pair with other devices but no connections can be made, so in essence it is broken (logcat available)
• At least some SD Cards will not work and the tablet wakes up from sleep with an error "SD card unexpectedly removed" - the same cards work on stock based roms
• WiFi ad hoc networking
• Minor graphic glitch when switching display orientation

Other thoughts:

• For a CM rom, it comes with quite a lot of unnecessary personalization, apps and tweaks that could be installed separately as users see fit
  • Gapps
  • AdAway
  • CPU Tweaks
  • File Manager HD which fails on some simple operations, instead of CM File Manager
  • MX Player which works well (arguably needed but still requires separate installation of codec)
  • Nova Launcher, alongside CM Trebuchet
  • Pimp My Rom
  • USB Host Controller
  • Viper4Android
  • Some other less intrusive apps that you can find under Settings-> Apps -> All
• Beyond that, one tool of choice for arguably necessary system operations is installed
  • RebootMenu, to enable rebooting to recovery which is not available in the Power menu

Send me a message if you want more things to be tested, or additions to this post.