An Australian store, paintballshop.com cerakotes a few of their LV1's and GEO3's.
For durability, the thing is insane - the finish is interesting to say the least. You have to remember that cerakote is essentially ground up ceramic and epoxy. A gun does have to be stripped of anodizing first though.
I've heard of some success with hydrodip + clear cerakote over the top for some truly custom jobs though.