I came up with a "Healer" as a combat profession.
They can't actually heal at all, not even themselves. What they *can* do is transfer a wound from someone, and magically "hold" it for opportunity fire (by touch) for up to 1 rd/level.
The downside is that if they aren't rid of it within that time, it's theirs forever... and they can't magically heal it. It's a religious restriction, so they can't get someone else to heal it for them either.
Variant of Monk, with a Channeling realm.