Issue #143 of Decidel magazine, which came out in September this year, came with a 'free' (if you paid $6 for the magazine) Integrity flexi. It featured one song, a cover of 'Deathly Fighter', which is a song by the Japanese band R.U.G. (Randy Uchida Group). Randy used to play guitar in G.I.S.M. who were a pretty big influence on Integrity, so it all kinda makes sense.
Well, I had pretty much zero intention of buying the magazine as I'm not really a magazine person, so I went about trying to get a copy from somewhere else. As it turns out, I ended up with a test press in hand drawn sleeve. I have to say, as far as flexi discs go, it looks pretty cool.
As well as this, there were 100 copies that came in a sleeve, made for This Is Hardcore 2016. Other than that, the only copies that exist are the magazine freebie copies that come without sleeve.