I've been smoking NHS for a week or so now and have been greatly enjoying the experience. The bud had been curing for a couple of weeks but could have done with a week or two longer.
These NHS are not very strong smelling, either in growth or when dried and smoked, which is useful for stealth situations. Maybe my palate isn't very refined, but I couldn't detect any identifiable smells, but it tasted more spicy than sweet. One taster thought he could taste menthol or mint.
I smoked the bud in a bong and spliffs and found the smoke to be smooth and mild tasting without making you cough. The hit from the bong was quite fast acting and strong, making the corners of your mouth twitch up into a smile for about 20 minutes afterwards, then into a pleasant mini-trip high for about an hour/hour and a half. Mostly a head effect, very little couchlock or laziness with this one, good for activities, playing music and socialising. Overall the stone was less of a fug-inducing brain holiday than SSH (which can last 3 or more hours), but the long-lasting effects and slightly trippy feeling have similarities. If I were to give SSH 9/10 for potency (and Blueberry say 8/10), I'd say NHS was 7.5 or 8/10.
Everyone who has tried it has asked when the next harvest is due.