When I flew twins off a reasonable runway, I would get the old girl airborne let her accelerate to about Blue line +20 before putting the gear up and climbing away. I would be through 1000' AGL in no time. That way, if one quit prior to blueline +20 I didnt have to worry, I would just put her back down on the runway if I needed to and once the gear was up, I was gauranteed a climb with a healthy margin above blue line until about 1000' AGL where I could level out and asses the situation. My reason for flying like this was for the exact reason PACE asked the initial question. To keep a healthy speed above blue line!
Bear in mind, this option isnt advisable on a short runway!
OSOP