"I plan on doing LineX inside the Jeep mainly for vibration dampening and looks. I may do the outside of the HT with LineX as well to make it bulletproof."
If you are going to use a bed liner for the exterior of a hard top I would suggest Durabak smooth.
http://www.durabakcompany.com/automotive.htm
Lot easier to apply and clean.
Used it for the fiberglass roof on a Northern Lite Camper that had some cracks after an PO had mounted the AC incorrectly. Fixed the cracks in the gel coat, sanded the roof, taped of area, and applied with a brush on a hot day.