I am about to do just this on my pop-top Land Cruiser, only using Durabak as opposed to Rhino liner. I will let you know how it goes in the next couple of weeks. I couldn't find Rhino liner in white (it was not in stock anywhere and no lead times available), which is why I am going with Durabak. One of the main reasons I am doing this is to make my roof cooler. Currently it is painted to match my dark grey car, and sitting in the sun it will get almost hot enough to burn you, I definitely wouldn't want to use black on the roof.
Finally if you do go with Durabak, don't buy it through durabakcompany.com, this is just a shady drop shipper who is less than honest. Note this is not a reflection on the product (made by lcote) but on this particular seller of it.
