I was/am a pursuit rider. I started using road bars with track characteristics like the Cinelli 65 Crits bars. You need wider bars for endurance races ( Madison,Points,Pursuit) in track to help you BREATH !
A long time ago I remember using my old track stem (Cinelli Deep Drop ) with my Cinelli crits ,it was ok for awhile but when you are looking for comfort it not there so I went to my road bike and pulled out my stem.
I have just recently started to go back to Deep drop stems just for old time sake but not to race endurance with. Maybe sprints and keirin races but that is the limit.
I changed my set up alot and tested them during my days a NYC messenger.