If the history of niche/parody films like this is anything to go by it might be fairly doomed (to cult obscurity.. though thats not certain; scott pilgrim, kick ass, etc.) ... But we shall love it verily any how!
I read that Dinklage bested his co-stars in boffer combat. I don't know if it was a free-for-all or a series of one-on-ones, but apparently, they went at it for fun with some LARPing weapons and the Imp was the true badass of the bunch.
Definitely looking forward to this. As I was watching the trailer I was thinking, "Wow, this looks like a cool movie about LARPing." And then as the trailer progressed I was like, "Wow, this is so much better than I could have imagined." On my must-watch list.