I have been using the HP TX2 1020ea tablet for a year, first with Vista then with Win7 32 bit ultimate
It was only reciently that the multitouch drivers for Win7 kicked in, but regardless it worked well with stylus input.
Don't take these criticisms as rejecting win7 tablet by faint phrase. The onscreen keyboard for the stylus improved with some text prediction over vista.
Under both operating systems, to enable full screen text recognition, I used ritescript. Mindjet Mindmanager is the killer app for this platform. There's lots of other configuration changes, utilities, ect I needed to do.
The bios/multiio chip for the TX2 is flaky, sometimes not responding to the keyboard, sometimes the stylus requiring removing battery and power supply and awkwardly holding across sliding power supply button, probably to discharge a capacitor to have things recognised again on a clean boot
The machine is in for repair after the screen was cracked. The upgrade to Win7 was in no way smooth. Too many windows applications assume a horizontal screen resolution of 1024 and when in portrait mode the screen width of 800 is frustrating.
The clunky new interface to Office 2007 was intended to make it tablet and finger friendly, but the criticisms in the article above are correct once you have to start navigating dialogue boxes etc.
Onenote also starts to become useful. It would be a better laptop if the onboard sound card worked better with Dragon dictate, though it can be persuaded to do so with tweaking.
In summary, long term I agree with the article because of the drag of pc architecture and windows adds to the expense in consumer hardware but I disagree in the short term, as the HP tablet's got me through two semesters with almost exclusively stylus input (I've other machines too, with other adaptive technologies like maltron keyboards)