I don't think Tyreke and Calderon could co-exist.
Calderon, he needs a quite a bit of time on the ball to take advantage of his skills as a floor general, leader and facilitator offensively. Tyreke's game isn't conducive to that type of PG play. Too weak off the ball. Far too reliant on having the ball in his hands.
I think Lowry and Tyreke would work well together. Lowry is more of a scorer than Calderon. Can go and off the ball with greater ease without losing a large amount of his own individual effectiveness (unlike Calderon). Lowry and Tyreke would complement one another well. Give you a nice 1-2 punch in a pick and roll orientated offense.