Feedback on my new portfolio theme

I wanted to try my hand at a portfolio theme (I know, how original!). It’s pretty simple but I think it has potential, especially for people who are looking for something clean and a little minimalist. I’m getting ready to submit it, but before that I thought I’d ask what you all think of it:

http://silverio.sachagreif.com/

There’s a link to a short survey on the last slide of the homepage slideshow, it would really help if you gave me your feedback! Won’t take more than a few seconds, I promise

I’ve improved a few details, and also added the really neat quicksand effect for the category filter:

http://silverio/category/portfolio/