Poppy: 3D video capture/playback that people will actually use?

Since this hasn't appeared elsewhere on The Verge, I thought I'd post here. Poppy 3D is a new product that just launched on Kickstarter that seeks to make 3D video more mainstream, like an classic stereoscope modernized for the iPhone.

B99cf8f57691625988d11b6d21ed40d8_large_medium

I've been fortunate enough to watch this product evolve for the last few months, as one of the creators Ethan Lowry (co-founder of Urbanspoon, among other things) is a friend of mine here in Santa Barbara. It's evolved into a great little product. No electronics - it's just optics and software running on your iPhone, for both capture and playback.

Their ViewMaster comparison is apt, but it's more than a toy. Excited to see how products like this bring 3D photo and video to consumers.

Anyone have experience with other 3D cameras? How would you use this?