Got to finally spend some time with Kids vs Goblins today and I'm having a good time with it. Getting the hang of swtiching stances and using my powers properly, it's a neat little game. The graphics do work a lot better in motion than in screens, although there is still a bit of jank to it.
I think my main criticism is that compared to Battleheart the locking on to attack feels a little bit insubstantial, it's like there needs to be a bit more feedback that blows are landing or that you're having an effect. You get used to it after a little while, but I sometimes feel like I'm doing badly because it lacks that snap-to fluidity of Battleheart.
But still, it's an excellent little game, and anyone with an iPad2 or 4S needs to give it a go.