If there are vocals, you will get judged by your vocals, its the main reason i never picked up performing as a OMB.

Its not about what we think but its about the crowd, and they will not hear the difference between A) who uses his keyboard as a midiplayer and sings along with his midi files or MP3's B) A truely great player that only uses a minimal style as backup or just drums and piano..

They will however hear the diferences in the vocal performance as that is where their ears are trained for.