Hmm.
I have played far more than 30 minutes, so I would say it was worth it.
And also, it takes a couple of hours, well what would you be doing with that 2 hours anyway? I mean are you using your Internet extensively all through out the day, every day? So you might as well put it to good use when it isn't being used.
Also jobabob, what do you mean combat doesn't feel fluid?
It is far superior to Oblivion, even though I do like Oblivion. Oblivion is just mash the buttons, maybe block, but not often necessary.
And also I love in Dark Messiah the way you can actually connect with your swords, and try to over power the enemy, were as in Oblivion I am not even sure if it is possible.
Also jobabob, you can hardly fairly compare this with Oblivion, since Oblivion is a full game, and this was just a demo