The lizardskin is holding up well. I don't have any real complaints, I don't have to worry about slipping when walking on the top. It acquires the "green stuff" that attaches to everything in the northwest if sitting to long, but that washes off easy with a hose. The lizard skin material can be painted also, I chose to leave it black. I am happy I'd do it again.
I wish I could tell you that it's keep the van cooler, with it's insulation properties. To really say that, I would have had instrumented it up and done some before and after measurements. Since I did not do the before measurements, it is a moot point. I really should have taken the time, my bad.
Top was originally installed in 2004, and I did have a prior leak in the roof, that was fixed.
It is difficult to tell the problem from the picture but if you look close the washers for the bolts in the rib were not centered, so one of them really never would get flush with the top, as the side was hitting the angle of the rib. I found that in 2007, so I suspect that it was leaking from the get go. The main reason coating the top was the clear coat was starting to wear, and some minimal cracking that others have reported.
I attribute the rusted bolts to the original leak. Being in the middle of the roof, and since I usually back into my driveway, the water had nothing to do but migrate towards the front. So my experience would be to check the bolts of all off them if you have had a prior leak. When I found that leak, I could not find when parked in the driveway, I had to move it out on the street. Of course it was still leaking, just not finding an obvious exit point yet. A could clue that you may have a leak is to look for occasional dark spots on the penthouse fabric(outside) this usually the undercoating of the fiberglass top.
I did use butyl rubber when replacing. Same stuff that Jage used in his excellent write up.