I have an update for anyone who cares (re: Stixx Mixx):
After some back and forth emails with (it turned out to be the owner) Ty, at Stixx Mixx; I can confirm that Stixx (on ELR) is Ty himself. So,
@FranC, the recipes (or lack thereof) are
not due to lack of product.
Further, when I asked him about steep times he replied with the following:
"Hey Joel...the N.E.T.s are pre-steeped, use them as you would any other flavorings. Stand alone they should be fine to mix without steep time, add other flavors, and steep as you would any other mix. I am the owner of Stixx Mixx...my name is Ty."
I am not sure that I entirely believe that; but at least that is the official position. As always... time will tell.