Let me preface this with; I'm not familiar with Rive Gauche and everyone's taste is different as far as fragrance is concerned. With that said, I rather enjoy the scent of Tuscany. I've worn it for many years since the '80's, at one time, daily as my signature fragrance. I was in my 20's when I began wearing it with no problems while in that age group. I have received numerous compliments throughout the years when wearing it. Some might consider it "old school" these days but it's a fragrance I'll always have a bottle of.
It's a relatively inexpensive buy so if you did blind buy and didn't care for it's scent it wouldn't hurt your wallet too much.
I give it a thumbs up but I prefer to sample fragrances on my skin in a wearing before buying.
Sorry I can't provide you a more definitive answer but good luck in which ever decision you should make.