Well, they also have a video about the PC Version which pretty much decided it for me. They designed the game for touch/IPad... there is no way porting, even with perfect interface/control, will make it a great fresh unique pc-game.
And then there is this -> 4-6 hour campaign ;/
that is a 50% variance and a developer estimate... and they want 500k for that? 500k for 4 to 6 hours of game?