I am going to go out on a limb here, and say I think you are going to get away with that. As long as you don't mix the sticks in different channels. It all depends upon how picky your MB is; not all are equal.
Neither set of sticks is on your QVL, but, of course, not all sticks are tested.
You will almost certainly have to pull up the SPD table and time them yourself though.