The Swashbuckler, of course, has accepted my "good" characters - gnome magician, half elf paladin, etc., without question. But he hasn't turned his nose up at my ogre warrior, my halfling rogue, or my Erudite necromancer, either. I spoke to a dark elf necromancer - about as evil as you can get in EQ - that used him for selling in the E. Commonlands area. So I guess this shady character doesn't care who you are, if you've got money. I don't know how he reacts to Iksar, though.
Now and then, someone will get crossways with him, and he'll chase them down the tunnel to N. Ro. I suspect this indicates someone who wanted to try him out, or maybe a bard who forgot he was singing Chords.