I use them for aid, and I find myself placing them more than my BD swedges or Metolius astro-brassies (for the same sizes). The kinda cam into the flare because of their shape (or it looks like it) and are very secure in flares

I don't have any complaints about these, although I tend to reach for the HBs first. I've found that the shape of these makes them sit a little nicer in certain types of rock though. These also work great on bolt/rivet ladders in a pinch. They cinch down really well.

though i have not used them much yet, the interesting taper on the bottoms seem to allow you to poke them in places traditional micros may not go. going to try on aid soon and update.

Good for aid, rarely used for trad. They fit in places where nothing else will.

Maybe not the first set of nuts to get but great for doubles in the small sizes. If you climb anyplace with small flared cracks these have the taper for you. I have placed bomber peenuts where a similarly sized regular (no asymetrical taper) nut was getting barely 50% contact and wobbled like a rotten tooth. Most comments seem to suggest they are more for aid, but I couldnt disagree more. Perhaps aid climbers find more flared placements, but I take these on trad routes and place them quite a lot. Buy one or two (the 2 and 3 are the key sizes where I climb but your mileage may vary) and try them out for yourself. Next time you get a little flare before a blank face you'll be happy not to be running it out above a mank regular-taper nut.