Celerity optical hdmi for projectors

Has anyone tried the Celerity optical hdmi cable on your projector? If so please let me know the results. It can work at very long lengths with ease up to 4k resolution. I did read somwhere that another brand optical cable produced a picture that had colors a bit washed out. I don't know if this happens due to the conversion process at the cable ends. Thanks

http://celeritytek.com/

Thanks for the link. I am posting this on the HDMI forum which may be more appropriate.