Okay, so far I've got a Cat Burglar 1/Harrowed 5. Would have tricked my way into Phantom Cat early with the Forced Harrowing feat, but I can't even take that until I would qualify normally, so bleh.
Right now my harrowings are pushing me toward a stealthy playstyle. I have effective HiPS, darkness at-will and the ability to see through it, pseudo-sneak attack, pounce in cat form, etcetera. In a level or two when I get into Phantom Cat, all my natural attacks in cat form will carry a negative level rider, which is awesome. I wanted to squeeze in Piercing Energy to help negate energy resistance, but that'll have to wait, unfortunately.
I do need to pick an energy type for Tenebrous Touch, though. Suggestions?