I don't have any doubt about this. Most people are only designers or only programmers (coders) however beeing able of doing both, especially with your design skills would allow you to be so much wanted in agencies (even if you're already a part of one, lol^^)! It also makes coding easier since then the designer can know what is possible to do and what isn't.
Very good job, keep it up! I added that website (the actual working one) to my favorites in my "cool design exemples"