I've scored and I've removed it. Love the extra bark I get by removing it first. I don't attempt to keep a layer of fat either. There is so much internal fat and moisture waiting to be released during the cook, I find its not needed.
But I do tend to flip a butt or picnic over half way through cook., start fatty side down and flip about half way. It's not needed, but I get a nicer bark on top that way. I love bark in my pulled pork.
Modded Brinkmann Gourmet. Basic UDS. Rescued 22.5" OTS. SJS Mini-WSM. Stubbs. B&B Oak Lump.
Cannondale 2009 F8 (for burning off all the great BBQ)