What you're speaking about is the global site. So far, MSI Malaysia only has ONE model, and that's from speaking with the official MSI distributer here in Malaysia. It is the GE40 2OC-019MY which offers a clean US Keyboard, ODD and one 750GB SATA.

I have been looking at the variants in UK and they do not have the mSATA + SATA variant. So far only the 2OC-009US has that.
You just need to bring to their service center and buy the upgrade from them. The two mSATA is nothing more than just an adapter sister board from one SATA to two mSATA. I can't imagine that being a pain to upgrade. Of course, that is, if you can get the parts easily. But that was what I was told when I asked my usual shop if it can be done. She said she contacted MSI and that was the answer given.