I think I have expressed my preference more than once here, which is that I would much prefer to play with other musicians than do a solo act ... but I have seen several venues where there is a solo or duo vocalist(s) singing to backing tracks on a laptop, so I have one question: why is THAT more acceptable than a OMB performing with an arranger???
Also, I have seen many 3 - 4 piece pop groups using a KB to play backing tracks to 'enhance' the arrangements of songs they are playing, because they don't have enough musicians to play the entire arrangement - why is THAT more acceptable than a OMB performing with an arranger???
I recently saw a quite popular 8 piece 50's - 60's cover band out of NY playing at one of the Connecticut casinos ... during one song I asked my wife to see who was singing a certain background vocal part - she said she didn't see anyone singing it ... I said "exactly my point in asking..."
As for not seeing an arranger in a band - PLEASE,WE HAVE BEATEN THAT HORSE TO DEATH - the reason is that there are other MUSICIANS playing the accompaniment part that the arranger does for a OMB !
I don't know how long AKBs and/or OMBs will be popular but I am fairly sure they will outlive me ... or at least my playing career ...
And I will enjoy playing until no one hires me anymore ...