Mine came with them, but I threw them back in the box. Last Friday I thought I'd take them out and play with them. I only skied with them for a couple of runs before taking them out again, because I didn't like them at all. I've read here that they modify forward lean, but it doesn't feel like that's what they do, rather they just limit the range of motion. Without them I can still move forward to the same position, but with them I'm stuck there. The condition was semi-frozen wet crud, and a few times I hit a hard bump it feels like I lost my balance and about to go over the handle bar, which didn't happen after I took them out. Although it's hard to say if it's because I'm not used to them.
So how far am I off base, what do you think of spoilers?