This is really wierd, I have been wondering the same thing. I have been having some issues lately and I am using the cream for it. I accually had some irritation and itching around my stoma. It really wasn't the wafer, it is the area where the collar is outside the wafer. Anyway, since I started using the cream it is healing nicely.
I was introduced to the Sween cream last summer (2009). My daughter had some bug bites or something around her ankles. A little lady that lives close to my mother seen them and gave some of it to us to put on her legs and it worked amazingly well. We use it for lots of other things too.
I have not put it on and then put the wafer over it, (I am afraid it would not let the wafer stick). I wear a belt and just apply the wafer and cut the collar part off and then I can put the cream where the breaking out is. If it works out for you let me know.
I hope you get healed. It can be irritating with the itching.