Agree with ranjit completely.
If it were studying counterpoint and theory with one teacher, and hiring another for keyboard technique and repertoire, that can be a very fine thing, which I did as a younger student.
But, I think one's head would explode trying to subconsciously integrate two approaches to keyboard technique. That sounds like a terrible idea.
Possibly if it were two very different genres, like jazz and legit music, but I don't think that's what you're talking about.
I say "hard no," that sounds confusing and takes away from the time you need to develop on your own between lessons.
Teachers teach, that can be true, but everyone teaches themselves first and foremost through effort, determination, concentration, and will.
If one dilutes the pool, it's no good.