I think what ur looking for is the SIMS Quest, although this is discontinued a long time ago... but I believe it was CFC (double camber under the feet with flat in middle, 3 contact points all together). I actually owned one couple years back... unless your looking for raised flat section in middle which would be the villian/assassin like others mentioned. And yea huck knife/ultimate ride is camber all the way thru the middle, that's why their called quad camber.you got rocker-camber-rocker hybrid shapes and so on. but is there any cfc? like from capita? camber-flat-camber hybrid. :/ ?
If its the first option I mentioned then Lib/GNU's C3 profile would be similar (also 3 contact points just the middle one isn't an extended flat one).