I use elixirs on my baritone, merely becuase of the convenience of buying a baritone set, rather than having to mix and match my own gauges...I like them, but they are hellishly expensive...
seems I use different strings on all the axes I play live.

My baritone uses elixir baritone sets, my Gibson is strung up with D'addario 10's, my Cort with D'addario 11's and my Prs with Ernie ball 9's

Dunno why I use different strings on each guitar I guess I have come to like the sound they make with those strings on em, more than I did with other strings...