The The Heritage I looked at recently had binding over the fret ends. :icon_thumright:
Warmoth binding is just around the board, and the frets go over it, so it's mostly for looks... however, on my Warmoth Strat neck, the edges of the rosewood fretboard were cut a little too square (almost to the point of being sharp) so, maybe a plastic edge would be smoother? I don't know.