That's what I have and it's great. Get an AP Valves PRESS clip they are miles stronger than side release fastex. Fit it so that the break is just below your armpit and it doesn't get in the way. If it all goes wrong then you can just buy some more webbing from somewhere or other
One piece harnesses are great but an utter PITA when RIB diving. Trying to struggle out of it in a swell with a RIB trying to brain you is no fun at all. Much safer to have a clip. Some people fit a "drop clip" where when you press the clip it simply extends the harness a bit. But I have a complete break and it works well.
You need 2 heavy duty tri-glides as the thick webbing won't fit through a standard one.
Photo here of a drop clip:
oh and if you pop a D ring on each side, if the clip breaks (unlikely but you never know) then you can use that handy double ender in your pocket to hold it together:
