I took Alucard's Aisha on a couple quests, her equipment is kind of on the low end which hindered her survivability quite a bit but if she had better equipment I bet she'd do much better! Anyway I had to release her because my party's first encounter with the Everfall wasn't quite successful.
Her equipment is barely above base, as it is. I need to get her better gear, so I was farming some money to purchase some better stuff. Watching the Leafs get stomped right now, though. :)
Oh cool, I'll be keeping a close eye on her then :D