I'd been planning on getting a bedliner in my truck, but I've had it 6 years now and have yet to add a liner. I had a slide in liner in my previous truck and agree it's slicker=n=snot. Also the slide in liners rub against the bed and will cause bare metal spots that you don't see.
A buddy recommended that I wait a few years to have the liner sprayed in as you want the paint well and goodly scratched to get good adhesion. I think I'm there on the scratches and dents, maybe this summer I'll finally do something about it.
