Depends on what you use the bike for. I wouldn't put aerobars on a commuter, as you don't have really good steering control using them. They will work for a run where more aero is a necessity and it's realitively smooth. Also, unless you change to barend shifters on the aero's you're coming off the bar to shift. Inconvenient, at best.

Wins a "bad idea" award from me personally, your mileage may vary.

-Roger