What they bring to the party
Planning, organisation, factual, steady, dedicated, persistent, responsible, detailed, logical, conscientious, hard-working, drive to get things done, ties up the loose ends, tireless, serious.
Not their forte
Being the life and soul, getting close to them, concepts and big-picture thinking, spontaneity, dealing with emotions, dealing with the new, being chucked in at the deep end, constant communication.