I did this for the first time a couple of days ago. The time between waking up from the LD and going back to sleep was just a few minutes. When I re-entered the dream I was back in exactly the same place surrounded by the same people I had been with and then I became lucid again almost immediately as I recognised it all. What a buzz! I actually had 4 LDs that night which is the most I've had in one night. Wicked dreams as well...

Also I learned a new way of stabalising the LD because looking at my hands hadn't worked in the last 3 or 4 LDs. I just relaxed and did nothing!