Yes, the tradition of Luther, et. al.
If you mean to just quote other individuals, Catholics, then, no, that is not Church Tradition, but picking and choosing those who you wish - and interpreting them as you wish.
Sola scriptura writ into Church Fathers. Your personal picks and interpretations in both cases. It's still your view, just you. Ultimately, your interpretation and your tradition. Perhaps you agree with some others on here: You are the Church.
Catholic Church Fathers built the church, allegedly. I think their opinion is important, even if you don't. Catholicism always disconnects itself from its own church history when it is no longer convenient.
So; you Catholics get to 'pick and choose' which writings of certain 'church fathers' that you want to???
Cool!
Almost like being a very wise individual who is more learned and able to JUDGE which of the 'writings' to be the most accurate.