Only area I would disagree is with the choice of synth for playing live in a band.

Modern arrangers can be FAR more user-friendly for calling up sounds and effects on-the-fly than any modern workstation. If you have time to prepare all this in advance, yes, the sound versatility of the WS gets the nod.

But if you play live with 'pickup' bands, or seldom rehearse, and just 'wing it', an arranger makes it MUCH easier to just call up the splits and layers than a WS.

Arrangers... they are not just for OMB's anymore...