Is the spray in one with the texture where it isn't smooth, but feels like little pebbles scattered about? If so, I would really be turned away from a truck with that. My brother has that in his truck, and you just don't haul grass clippings, or anything else loose you would haul off with your truck. Dirt is so much harder to sweep out of that than my drop in was. My drop in also looked real nice, and you could take it out if you wanted. Nothing was done to my paint removing that, whereas a spray in would be a different story removing from the bed.

 

I had the dealer do the spray on as part of the deal on mine. You can usually get a local place to do it cheaper than the big name Line-X and Rhino.
Mine was done by Xtreme Liners and has a lifetime warranty. Check a local truck accessory store. My dealer paid $355 to have mine done.

 

Line-X and Rhino have different textures. I know Rhino has a couple of different options too (low pressure and high pressure application, which look different), so you could always go take a look at them before you do it to see what you like. Mine gets dirty, but it's nothing a hose can't take care of. In my old Dakota, I had a drop in plastic liner for a year or so before I got Rhino done to it, and when I took the drop in out, the bed was scratched badly where the plastic was in contact with it because it moves slightly when you are driving, scuffing at the paint.

With any of the spray in liners, you don't remove them - it's basically impossible. However, there's no need to - the big name brands are guaranteed for life and if it scratches, gouges, etc, they will fix it for you. My buddy got in an accident in his truck and they replaced the rear quarter panel, and in the process damaged the Rhino Lining... They fixed it, and you couldn't tell that they fixed it at all other than immediately after the fix because it was shiny for a couple of weeks. I've never had any problems with my spray in, and I know several people with spray in as well, and they haven't had problems either. One of them is a contractor and he abuses his but it still looks decent.