MCC 110 does fine with selenium. I routinely selenium tone all my MCC 110 prints. But I've never followed it with another toner. As I mentioned, 5 minutes starts to go noticeably purple in a color I'm not really after, so I stop after 4 minutes at 1+19, which yields a slightly cooler (neutral, not really cold) tone and slightly increased d-max. It doesn't change much compared to other papers, but it does change usefully.
Thanks for the compliments on the brown toned images.