Our group has had a Fighter 1 / Hexblade X with us for a while, and he does pretty well. However, the main reason for his success is that he's the guy with heavy armor and a greatsword. His minor spellcasting hasn't done anything (especially since he wears plate). However, Endure Elements and Alarm can be pretty useful outside of combat. Still, that's a major class feature going to waste. Or was at least, between leveling up and a DM rewrite, the hexblade now has a double dose of Battlecaster and the Whirling Blade spell. Too bad he leaves the group. The hexblade curse has similarly been mostly ineffectual; without a major investment in Cha, the DC sucks. However, since it's a free action, the hexblade doesn't lose much by trying it. I suppose one interesting thing is that the character looks like a fighter and mostly operates the same way, yet has Will save far superior to the typical fighter's. So people trying the standard Charm/Dominate/Hold the meatshield trick might be in for a rude surprise.