well, i say that you try to keep any control you can, i have tried to keep any and all control that i can over the years, and yes that is not much anymore, but i can make the toilet from time to time, and usually only BM ever few days (yes that is a problem with OIC) and i can most the time make the toilet for this, even if i do get a bit in the diaper i do try to get the mojority in the loo as much as i can.
At some point you will most likely want some bit of control, if even the ability to hold onto something for 1 min to make a toilet and save a large cleaning process, and by totally letting anything just go it will be hard to impossible to bring back the control you have lost at some point. and i do know that having some air out time helps my skin and having the ability to do this really helps, and a rash is not fun for me.