Browsing through the backer comments, I find that about half the reactions to that demo are similar to this one:

> I too am very disappointed with the bare bones tech demo you created. I had high hopes for CLANG - I bought the Razer Hydra expressly for it and then realised how pathetic the prototype really was.

> I don't believe you properly fulfilled the reward pledges at all and it sounds like our backer money was simply wasted. I would love a refund, however failing that I would like to see code open sourced and released to the public.