You'd think that a double 7 mil ply head with oil between them would sound dead and dull, but you'd be wrong. This is an Evans head, after all.
True, you will lose a little (really just a little) expression, but then again this isn't a batter head for jazz drummers. The added punch and the ease of tuning more than make up for that, not to mention the fact that this thing can be tuned to insane heights of pitch without breaking a sweat.