I think you need to go and try it on before deciding. I think that GT with PHW might be my dream H combo, it's the only H neutral that I have tried on so far that looked good on my my skintone, but I have not hade the chance to see the color in "bag size" so it's hard to tell if I'd like it or not. I am quite picky with colors.
I thought I'd like etoupe, for example, as I love it in pictures, but I just didn't love it on myself. I know Birkins are hard to come by in the first place but I think that they are way too expensive for anyone to settle for something one doesn't love, and neutrals can be tricky as they really need to compliment your your skintone in the best possible way in order to look good on you. That it's a "pretty color" really isn't enough.