I had the same experience as Christian -- you want to connect your HP Elite to this device, otherwise when you use the touchpad the mouse motion is rather "jerky" and really annoying. I wish HP had made the lapdock touchscreen, you do need to overcome a lot of muscle memory and learn to do things different when you switch between your phone and the Lapdock -- it doesn't feel "natural".
Also really hoping Microsoft gets the same version of Outlook that's available for iPhone and Android onto their own device soon! A full fledged real email program would make both of these devices a lot more PC like.
Not in love with how you navigate OneDrive, though in fairness I never was -- I'll have to see if using it over time is less irritating. While on a PC I'm more used to going to folders and open docs, it seems more efficient to open word or excel on the Lapdock and then look at your recent documents.
As a side note, I connected my mouse to my phone so I could use a regular mouse with the lapdock and it worked pretty good (although in wireless mode of the HP Elite to the Dock this could be really really jerky, again wiring the Elite to the Lapdock alleviated this).
Overall, coming from a regular laptop this will feel underpowered I think. I have a trip coming up and I'm going to try and abandon my laptop and only take this and see how it works. For a business user (who lives in email, word and excel) this is the right direction -- just not sure if they've gotten quite there yet.
Still have a few times where apps unexpectedly close (the WSJ app kept pausing and randomly closing yet it works fine on the phone). And wish a couple of apps would work with the dock (evernote, are you listening??). Facebook strangely enough opens .... but sideways with half of it cut off.
Also which they'd use the same methods we've learned on PC's. It was nice to see that ALT-TAB works, but I'm really used to right clicking on icons on the task bar and having some action available. The close button in the upper right corner seems to be a little wonky (to get it to appear).
More to follow, let me know if anyone has any specific questions.....