I just read a WIP on Live Journal it's a Ikkaku/Tatsuki and done pretty well. I usually see Ikkaku with Yumi, or occasionally Renji/Ichigo/Shuuhei so it's a different thing. No sex, but it's definately cute!
It's called Brass, and here's the author's LJ site
http://community.livejournal.com/digitalspit/