Matthieu,
If you take your OL seriously, IMO you should only do it in OL shoes.
If you had to pick an all-in-one, I'd hazard a guess that the
Nike Free Dynamic TR Men's Training Shoe would be a decent choice, based on the fact I did many CF workouts in my old pair of Nike Free Trainer 7.0s (not made anymore, but probably pretty similar).
Now that I have my OL shoes, I wouldn't lift without them.