I'm getting intrigued by the trekking bars I'm reading about here. The bars on my hybrid are pretty comfortable, but I think that I need some different positions for my longer rides (13 mile commute). A more aerodynamic position for when I'm really booking it would be great, too. What I'm wondering is whether I'd have to change my stem length so that when I had my hands in the "normal position", where the brakes and shifters would be, it wouldn't be too close for comfort.