I’ve done LHB at wedding gigs but don’t enjoy it. Like many, I prefer to let the bass player lay down the bass, which provides the freedom to do LH chords or other accompaniment. In my main club band our (female) lead singer plays bass, but I do LHB on a couple of tunes so she can jump around a little bit. My typical application is RH piano, organ, or synth/rompler, with my LH doing more of the same, depending on the song and/or how I have the patches mapped out across my two boards.