In a word, fusty. Iceberg Twice Pour Homme is the smell of ten grandfathers, liquidated, and then boiled down to their essential aromas. This is not a bad thing if you enjoy a musty, chemist, vaguely sweaty sort of scent. Me, I hope to never smell this mature. The doom is present from the very beginning, although initially there's a sweet-spicy duo that cuts through the must, that makes it bearable. That disappears quickly, however, and by hour five, I'm over Iceberg Twice.
With that said, it's not horrible, just annoying, like a crotchety old man who keeps telling jokes that really aren't funny. If you hold out, it becomes moderately enjoyable towards the end of its life, where it evokes the feel of a well-accomplished older gent. I think the vetiver and lime are largely responsible for that, but the scent is well-blended, and so all I get are impressions and not individual notes.
Projection varies from one to two feet, and you can always smell yourself.
I encourage you to write your own review and set the record straight. If you wanted me to apologize, alter, or remove this review, that's a bit much to ask.