I had heard horror stories about SLCs, but I went ahead and rode one anyway (Kong at SFMW). Honestly, I was actually pleasantly surprised. It wasn't any worse than some other coasters I've ridden and nowhere near as bad as it had been made out to be.
The SLC in the picture looks like it would be a lot of fun, actually. It has a cobra roll and a vertical loop, which the standard "off the shelf" model doesn't have.
Eric