At first I didn't bother with Wisdom or Mindread, but eventually got a several pieces of equipment with Wisdom bonuses, so I added a couple spare skill points. I only found one piece of equipment with a Mindread bonus, which wasn't very good, so never used it or put any skill points into it.
The game does start getting a little easy at high levels, except occasionally in dragon form. I haven't raised the difficulty to hard, yet, but playing again I don't know if I'd bother with Wisdom.
