i think it depends on the motivation. All types can become very involved in the work. I would say that sensing types will become workaholics if they want money, but i know sensors that live below their means. A lot of professors in research positions work many many long hours and their types vary. I've read that LSI's are very good at doing menial tasks even if they don't find them interesting. I don't mind doing uninteresting things like math equations for practice or cleaning the house.