mickky,
That's quite common down here in the US. Many Hairdriers come with the integral GFCI. I don't see any problem with it being used on a GFCI receptacle. It would be more like double protection if anything. I haven't noticed any "Nuisance tripping" with them either.
Does your code (CEC) require GFCIs' in specific locations? If so, which ones?
:0
Bill