I've used my Arranger with a band but as just as keyboard doing LH Bass/ Organs & Piano. Also just Organ and Piano with a different band.
No Arranger players here. One band called Ross2, a husband and wife team uses one. The husband just changed to a Yamaha 710 from a BK5 but just uses it for drums which he heavily edits. Along with that he does LH Bass and Piano. The wife uses a Keytar and plays the he** out of it doing guitar, brass, and synth parts. They both sing. My favorite band here.
Keyboards in general are not big here at all.