Quote from Aussie on Apr 23rd, 2012, 7:05pm:I voted cupped but with reservation. It depends a lot on the ammunition you use. If you use natural stones that are always rough and irregular then a flat pouch is quite adequate. In fact it is possible to sling smooth spherical ammo like golf balls from a flat pouch if you position it very carefully. However, generally it is preferable for a pouch to have some degree of cupping for balls. Just make sure that the pouch doesn't grip whatever ammunition you use so tightly that it snags on release.
And that's my main point of contention. I like the idea of a cupped pouch, and I guess a rockman sling is slightly cupped, but my netted slings simply can't handle the rough stones I have access to in this area. So I wind up using the rockman. And the sling I got from pikaru in the last SITH had a flat woven pouch and it functions incredibly well. So the flat pouch worked better than I thought it would.