Yes I'm a lens geek: [url="http://photorumors.com/2012/09/14/samyang-10mm-12-8-ed-as-umc-cs-lens/#more-31872"]http://photorumors.com/2012/09/14/samyang-10mm-12-8-ed-as-umc-cs-lens/#more-31872[/url]
If it beats the Tokina 11-16 for IQ or price significantly it's interesting... otherwise...
But you may find it interesting as an option for BMD camera...