Yes I have heard of similar stories of Dual Sim Phones & work here, perfectly well too.. (Chinese copies etc)
Even when I visited Hong Kong earlier this year, that is all you can see, Phones that have not even made it on the market here yet & some awaesome Dual Sim action too.
If you think you can get away with it, then go for it!!
I'd suggest that you whoever sends it to you, that you can get them to mark it up as a gift..