Good job Tiffany, Christine & Cinta ... lovely combinations!
I don't happen to do combo pots myself but I do group houseplants together, each in their own container ... that being said, I see nothing wrong with combo planters when the plants all require the same light, soil, moisture, etc. I grow plants for their interest and enjoy decorating with them both indoors and out!
Plants in the corner of my kitchen ............ And on a table in the pool area: