I used to use my SWC with a Leaf Aptus 54S (no microlenses, 48x36 sensor), and I barely saw any color cast. I feel it really was not a problem. Easy to correct, as Yair mentioned, but I never even corrected it. I don't think you should feel hesitant about using this combination. Might be different with microlenses, but as I understand it, the presence of microlenses cause the most problems when you include shift, which obviously won't happen with an SWC.