Hi Michael !
It's a pleasure to have feedback from the creator of MOI itself ! Thanks a lot for taking some of your precious time answering my question, I appreciate !
Your screen shoot are very interesting though, didn't know surface could be a bit messy around those kind of curved surfaces eventhough it looks clean in the viewport.
I'm now trying your technic, hope it's gonna work :D If it does, I'll provide a nice CG render of my swatch once it's done for the MOI user gallery ;)