FM Geranium pour monsieur is mostly a minty fragrance for me. Even though it has geranium in it, the mint dominates during the entire progression.
Washington Tremlett Black Tie is like a lighter version of Montale Black Aoud. It doesn't assault the senses, unlike the Montale. It does share some similarities with C&S No. 88 too. I think it's the geranium note that they both share.
That said, Black Tie is more rosy than N0. 88. No. 88 is mostly about geranium and sandalwood.
I own both C&S No. 88 and Black Tie despite some minor similarities between the two.
GpM is something I don't like and is the only Malle that I don't have.
It depends on what you are after. If you wish for another rose fragrance it has to be Black Tie.
It's addition will not be redundant in a wardrobe that already has N0. 88.