It apparently hasn't been released just yet, but over in Japan the Elecom Dux (specifically the M-DUX70BK) looks fairly interesting.

fig3.jpg


http://kotaku.com/a-gaming-mouse-des...ers-1744581316
http://www.4gamer.net/games/325/G032556/20151124029/
http://www.elecom.co.jp/news/201511/game_dux/