A few weeks ago I switched my hard drive back to Vista on my Lenovo X61 Tablet. Over all I think Windows 7 is a huge improvement over Vista. I couldn't get my pen to work the first time but now it appears to be working and the handwriting recognition has gotten even better!
So, back on Windows 7 Beta and I love it!
Windows 7 is available to the public now but I'm still loving Windows 7 Beta on my tablet and everything is working great. Looking to get off the Beta and onto the production x64 version soon. I haven't had any issues with features working but I will document the install better this next time around.