I got mine today
Negatives:
Noticeable framrate. After playing ZOE and Onimusha 30FPS sticks out and is very very noticeable
Slowdown was minimal but I was on easy mode the 1st time
There is a real lame ass low polygon martian whale.
Character animations are stiff
Positives:
The game is cool, in the demo I operated a turret blew up the enviroment, operated a sub, confronted another sub and whale, took on some giant robot thing and blew up lots of people
In other words a nice variety of things.
Some of the graphics look really cool, (other whales look lame)
The story line should be interesting but you get a very little taste of it in the demo.
Overall I believe most people will enjoy the game when its released, there will definetly be complainers though. Red Faction will follow in the Summoners footsteps in a way. Lots of potential for a AAA game but fall short for similar reasons.
I do believe though that Red Faction will be technically superior to Volitions The Summoner which will probably allow Red Faction to be a better game then the Summoner when the final grades are handed out.