oversea:See, I have never had the problems mike is describing. I don't use my inflator to dump. I have a right shoulder and lower right dump I totally use. It's not from practice, its just the way I do it. I don't like the way the inflator dumps. Also because both my lower and upper dumps are on the same time, it has just become second nature to reach for either on my right side. I only use my inflator for inflating or emergency breathing. Keep in mind, this is ME, so yours and others may be different.
It can certainly be made to work.
I like a wing to have the inflator and one pull dump on the lower left. That's it, no other holes in it. My left hand controls buoyancy and stays free to hand off my primary if I need to. My depth gauge is on my right wrist since my right hand is always in front of me anyway.
The pieces go together and don't get in each others way.