I have no experience of my own, but I've seen documentation of mixed pots. If you build a good soil it should be no problem. If the building blocks are in there the SFW will work to supply the needs of the individual plants. I fail to see where different feeding habits come into play with a living organic soil. We feed the soil not the plant. It's an entirely different approach. If you feel better grouping strains, then feed that comfort level, but the science is sound - plants benefit from growing in a community pot.
Edit: check out DrZiggy. Multiple community pots.
Edit: check out DrZiggy. Multiple community pots.