It's a little bit unconventional but I don't see any reasons why you couldn't stack tbol and dbol together. I kind of like the idea actually. Most people pick one or the other - why not use both and get the best of everything.
The gains from a tbol/dbol only steroid cycle won't be quite as good as you would get with an injectable cycle but you can make very good gains, and keep them with a proper cycle lay out and PCT.
The reason most people don't keep the majority of the gains they make on a steroid cycle is because they don't run a proper PCT.
I explain how to properly run an oral only steroid cycle in this video here ->
https://www.youtube.com/watch?v=5DBrylerLxA
It looks something like this -
Weeks 1 - 8
Dbol 30mg/day
Tbol 30mg/day
Aromasin 10mg every other day or arimidex 0.5mg every other day
A good natural liver aid supplement like N2guard - 1 serving/day
A good natural testosterone booster like HCGenerate - 1 serving/day
Followed by a mini PCT to restore natural testosterone production.
4 weeks of the following:
clomid at 25mg/day
nolvadex at 20mg/day
A good natural liver aid supplement like N2guard - 1 serving/day
A good natural testosterone booster like HCGenerate ES - 1 serving/day