Mike's right, there are otions but it's all about what is a viable option to bring to the marketplace. The Ceramic is the easiest and most cost effective way to get more holding power. In a world where most guys are looking for the best deals out there, it'd be hard to sell an $800 plus clutch pack to people who are building an off-road truck. On the race scene, multi-disc clutches are all the rage but those people drop the coin on performance and performance alone.
That being said, I have a ceramic disc in my 600RWHP Dodge and it drives me nuts. It is extremely grabby and does cause the truck to hop a bit on take off, but it does grab and I can count on it to hold all 600 ponies without fear of slipping. Now when I can afford it, I will definately be dropping about $1500 on a dual disc South Bend clutch, but until then, this gets me by.