Injectables, no. You're going from supraphysiological hormone levels down to normal or suboptimal. Doesnt matter whether its NPP, Test, Mast, EQ, it's all the same.
Orals, (i wish i didnt even have to say this) aint it. You will lose it all. The loss of whatever gains you have on orals will be much quicker than what you got on injectables. Just remember that.