No one has run that specific stack that I know of due to them both being very new products. That said, they would make for one hell of a stack.
For your personal info, 1-Testosterone only has 2 ingredients, they are 110mg 1-andro(1-dhea) + 50mg 6,7 DHB. The 1-andro(1-dhea) converts to 1-androstenedione and 1-androstenediol, and those then convert to 1-testosterone via the 3-hydroxysteroid dehydrogenase & 17-hydroxysteroid dehydrogenase enzymes.
Now, here is why I think this stack would absolutely rock:
1. Highly anabolic - the active target steroid 1-testosterone has an anabolic rating 2-7x(depending on what literature you view) stronger than that of testosterone itself. This means big muscle gains, which can be seen from our loggers running this ingredient at only 200mg/day(2 pils of 1-testosterone gives you 220mg) gaining 8-16.8lbs so far.
2. Benefits of Deca - Deca is usually added to a steroid cycle when the user is looking to increase gains, but not increase side effects. By adding deca to 1-testosterone, you're increasing the anabolic nature, while not opening yourself up to unwanted sides that you may see if you simply doubled your dose of 1-testosterone
3. Joint health - Gaining weight & strength very quickly can take its toll on your joints. Deca increases collagen synthesis, which means your joints are better cushioned, and you'll have way less potential joint pain.
I'd run this stack as follows:
Length: 4-6 weeks
Dosing: 1-Testosterone @ 2-3tabs/day + Decabolin @ 2/day