It sounds to me like the attitude really needs to reconsider what is stealth. I've never had this problem with nirvana seeds.
I've always received my letter sized envelope, proxied either through switzerland or france. Just an envelope with cardboard in it, no "t-shirts" or "jewelry boxes".....
Granted, I've never ordered to near chi-town before, but relatively close.
One time I got a cardboard insert with a little dutch boy and dutch girl on it kissing. The caption on the picture said "It's what's inside that counts". The seeds were inside the cardboard thing, but you had to break it open to find the seeds.
Another time, I got "potters" mints, but I may have gotten that one from the attitude. I forget.