Yes, they are fully adjustable.
in the picture of my set up, above, the pads are mounted on the extensions a couple of inches behind the base bar. When riding I can reach the tops in front of the pads.
Rob's TT setup is way more aggressive than anything you would see on an ultra bike with far more weight on the pads (because his saddle would be much further forward). The bumps he mentioned in the a31 have made my profile T2 pads slip regularly! I still think he was unlucky that he had one pad slip as they are rock solid. The key thing is two bolts, not one, and a big contact area that you can load up with assembly paste.
I'm not on commission from Zipp so, by all means, get something else first. Then get the Zipp ones later when you've found the others aren't as good (that's what I did)!