As orchestras around North America struggle to adapt to a harsh new funding climate, a dividing line is appearing between those ensembles which choose their leaders based mainly on their perceived business savvy, and those which prefer to be led by individuals with experience in the arts and non-profit sectors. This week, the Baltimore Symphony Orchestra is expected to take the former course, promoting its 49-year-old marketing director James Glicker, who had never worked for an orchestra before being hired to his current position in January, to the post of executive director.