I think Eli and Nozomi are the "switch" types. But why would ponytail/Eli's hair get in the way when she is bottom, wouldn't her hair be a bigger hassle when she is the top- falling over her eyes etc.
Though I love Kay/Darjeeling, I'm surprised why isn't she paired more with Gloriana girls like Orange Pekoe, Assam. I mean these three are always together.