Never mind. If you crank the rod ends all the way down, you can use them as camber links, but you don't get much adjustment. You might get 2-3 degrees negative camber at the most, but you could get all the positive camber in the world...
It's funny you posted that, I was just about to post that they are too long, but can be turned in all the way. I don't think I'll be needing any negative camber anyway! I figured that they put the solid ones on for a reason, so I just set them at the same length.
I didn't bring any hardware with me, so I'll be installing them tomorrow.