It can work, as I've had to do it plenty of times. For me though, it worked entirely opposite of what PianoClubHouse suggested.
Perfectly fine during instrumentals and even slow songs. A killer when other people have to sing. Why? Because they cant seem to find the key nor the timing when its just the bass. Which is absolutely puzzling because most songs our organist fumbles over anyway.
Bass is my passion as well, but I like keyboard as well, and in those situations, I play the songs that I can on the keyboard, and default to bass for the more troublesome songs (old hymns and congregation songs). And the singers tend to work better with the keyboard alone than with the bass alone.
Maybe you can try to have someone help on keys for easier songs, that way you get some bass time in, and they dont have to be that skilled. Then for the more difficult songs you can take over on keys.