I am only on my 2nd good SR shave, which took me 40 minutes, so when I need to get out the door, I turn to my single edge razors. When I picked up traditional wet shaving with a DE a little over a year ago, it also took me 30 minutes so I am not too worried about that.

I found I prefer my single edge razors to double edge. With my Gem Junior Bar (Lather Catcher) or Schick Hydromagic, I can get a superb shave and very quickly if I need to as they don't bite unless really provoked and are very efficient. I would not rush a shave though with my other SE razors, especially not on a brand new blade.
For me, shaving with a Lather Catcher is special, not only because of the great shave, but also because they are just beautiful instruments and that visual aspect is part of the experience, for me.