I haven’t grown the D myself but I did get to see it up close once. To me it had the lemony sour but also had a disgusting bad breath halitosis smell that I think is what develops into the BO stink in cure. The nug structure was weird, kind of like flakes stacked together into nugs if that makes sense. Could have also been how it was grown.
Though I’ve never grown either the 91skva or the D (@Santa 
- they’re on my xmas list wink wink), from what I’ve seen and heard, the D is waaaaaaay different than the 91skva in every way. Makes you wonder if they’re even related. Same for the 1, 3 and 4 too. Such crazy variation that you usually don’t see if they were mostly s1 seeds (despite the claim of finding and tossing 1 male out of the seeds).