Hey guys,
Sorry for the late update. I did end up getting a Draco from Tekcases when I met the owners in person this past Sunday. They let me try the case on the 4S and as they said, they work fine. So I can vouch first hand that at least the official Draco's work perfectly fine with the 4S (and by extension the Verizon 4).
Official word from Draco support was that, contrary to their website, there is no CDMA version or specific 4S version. Also, tekcases is the only authorized reseller in the US (they didn't give me a list of international).
Out of curiosity, I did buy a very cheap, probably fake, Draco off eBay so I can do a comparison of the quality. I won't get it for a couple of weeks though but I'll try to remember to post again once I have both.
~Paik