Actually sniffing the DHS drydown as I write this review. Despite the family relation, this scent is quite different from Dior Homme. Whereas Chanel's Allure Homme and Allure Homme Sport seem to hold a close resemblence, this is not true for the Diors.
DHS opens with very sharp, clear lemons, as the dominant note. I haven't tried them side-by-side, but I'd say this is every bit as lemony as Chanel's Allure Edition Blanche, which seems to be a pretty direct analog. DHS doesn't have that creaminess though, it is more like a juicy lemon. As a scent, this has obviously been done before, but this is about as compelling a version of it as I've smelled - although wearing it several days in a row can be fatiguing. I don't think this is an every day frag because of that.
Having said the above, this one works well in a couple of different scenarios: work (in moderation), casual and daily knockabout scent. I don't think I'd try to dress it up for anything approaching formal, its too playful. And a date scent, it is not, to me.
It is a little more sophisticated than most citrus-focused scents though, having a bit of complexity in the heart and drydown that gives it enough seriousness to not be embarrassed if you do go out amongst adult company. This one does not scream "fratboy".
Notable Comparisons: Eau Sauvage, but without the vetiver/herbals.
Differences: If you were expecting a sportier Dior Homme, with DH's great florals and powder, this will be a surprise because they don't exist.
Longevity is good, if not great, but it is a citrus-based sport frag, so you have to grade on a sliding scale. I'm at about 6 hrs now, and it's still projecting lightly. This is consistent with my previous wearings.
Sillage is good, and can be a bit much if oversprayed - don't go crazy with it or you may earn the nickname "Lemon Pledge" with your coworkers.
I rate this one a "like". I'd say the same about Allure Edition Blanche, for comparison's sake. Eau Sauvage would be my "love" in this general category.