I've worn it (vetiver oriental) and my entire SL collection in summer , autumn, winter and sprimg without regret.
VE is a lovely sap based perfume. But keep in mind the vetiver is , well obscure. I've worn it several times without actually getting the driver part but ive gotten it a few times too.
And since you own and enjoy all those Serge Lutens then i can safely say you will love VO.