I know there were some problems with importing Visemes with various versions of Genesis (DS to iclone) and there were numerous discussions regarding workarounds here and there for each figure, even Genesis 9 with it's split mouth rigging. I'm pretty sure they all relied heavily on 3DX via FBX export from DS to iclone. Possibly, it's also more of an Iclone suggestion for modification of it's import process, and I see you already have a thread over at Reallusion discussing the process. But it can't hurt to cast the web wider to see if anyone can help out with something like this. I agree the results would be interesting and useful for iclone animators, especially if streamlined and easy to enact.

The best person to ask regarding the feasibility or any potential major issues surrounding your suggestion is probably @WendyLuvsCatz or @wolf359.

I suspect it just may not be possible without a major plugin or possibly a converter of some kind to translate, tbh I have pretty limited experience with Iclone so I couldn't say for sure.