I think I missed the question...
Now I'm confused on what does what?  The only drag racing I know of requires men to wear dresses while crossing the finish line.  
A Reverse Camber board combined with reverse side cut offers the rider a smaller effective edge.  Thats why boards like the Twisted Velocity ride smaller (feels like a smaller board) despite its 164cm length.  Due to that shape, you are riding on a shorter 'effective edge' 
While reverse camber boards are being debated in the downhill world, I feel their dilemma is more a cultural debate... and indeed may be a mere marketing ploy to be 'different'.  For the Snowkiting world, that design opens up the doors we have been looking at for nearly a decade.   In essence, the posi side cut offers more comfortable and less fatiguing feel for the straight line riding that we do while kiting, yet it also allows the carvability that all board riders seek.  Staright Edges were a great conversation over beers for day dreaming snowkiters back in the day, but we all realized their limitations for turning ability.
A Regular board with standard camber and normal side-cut (to a degree) has always worked fine for downhill and kiting, and offers the old skool feel... I suppose kiterboarders may call it the wake-style feel of loading the edge to pop...where as camber boards do the same thing but offer a different feel than traditional designs, without the tendency to continually want to carve when you want to go straight.
Within each design is a universe of shape and stiffness options...some work for a select few, and some work for the masses.  Some are weird.  We found with the Twisted Velocity that having less stiffness overall allowed the design to perform equally well in a wider variety of conditions...mainly it allowed the board to flex more and 'twist' to initiate a fun turn.  Some stiffer versions like the 'powder only' T rice boards, are too stiff for most riders on the average off-piste snow conditions that most kiters ride in.
Damn, Now all I can think about is my new pink and yellow dress for the next Drag Race. 
 Windzup,
Brian Schenck
BTW - Now that I know how H-man feels about bananas, I'm glad I've gone Twisted!
 
			Excitement, adventure... a Snowkite Jedi craves not these things.