What do you mean with you got lazy? Were you too busy (eg meetings) keeping the right sleep schedules? How hard is it to wake up at the right time if you are accustomed to it?
If you would have the possibility to do it again, would you do it again?
I stopped using an alarm clock after about a month- so for 17 months I didn't even need an alarm clock after I was accustomed to it.
Doing it again... yes, if the circumstances were just right. Looking back now I realize I was in a unique position with work, family, stress levels, weather, etc. It took a couple of weeks to adjust back to a monophasic schedule- and it was not fun. I'm not excited for the adjustment back to polyphasic sleep. But yeah, I might do it again after our move to Silicon Valley later in the year.