The IA pack is great. It fits me well and I find it very comfortable. No, the carbon frame may not look like a piece of jewelry, but it is very functional. Before I purchased a used pack I called and spoke with one of the owners who was very grateful to answer any questions I had knowing that I was looking at a used pack.
Don't throw shade on them till you have a reason too, and just because they do not get a ton of spotlight doesn't mean they are not good packs. They must be doing something right as they are still in business, and participate at the big name events around the country.
I see a ton of SO, EXO, Kifaru, Kuiu for sale on here all the time. What's that mean? Someone wasn't happy with it and is moving on to something else!
I very rarely see any IA packs on here. The last one I saw I purchased and couldn't be happier with it.