Yamaha Motif has a nice composing tool they call a pattern sequencer..

You actually create midi loops (16 tracks) and then you can swith between them, or just chain them in a certain queue to create a song.

Its a lot like creating style parts but then without the chord changes but allows a lot of the flexibillity.

Are there any arrangers that also support such a mode? Any other synths workstations? Or is this something found in Motif and software tools only.

It's actually a throwback to the earliest days of sequencing, where, usually for lack of data reasons, ALL sequencers used the 'chunks' system. You made a chunk for the intro, a chunk for the verse, the chorus, the bridge, etc., and then created a playlist that triggered them in the order you wanted.

It's great for electronica, hiphop, trance, all those hypnotic repeating stuff, but was superseded eventually in the software world and then the hardware worlds, by sequencers that had sufficient storage to allow through composed pieces, so the second verse wasn't IDENTICAL to the first, and so on. FAR better for acoustic and played (as opposed to sequenced) types of music.

Bottom line is, most sequencers allow you to copy and paste whole sections of song around, which allows you to do many similar things to pattern mode, but without pattern modes limitations. Albeit, not in realtime, unless you start to use the Markers, which can allow you to realtime the order of your song.

In an arranger, it is very much like switching between styles, while the style is running. You get the same ability to still play the chords, but you get radical (or subtle, or anything in between) changes when you switch.

I think you'll find this ability (or something functionally similar) in just about any modern WS like Fantom, M3, etc..

I know Motif supports this, i know M3 doesn't.

For me its a bit like i currently use ableton live.

I use there patterns to just jam arround and improvise. Having 12 different blues patterns and switching between them without the need to play chords on the left can be a blessing sometimes, I prefer this above styles in full keyboard mode.

There are so many ways to be creative on a keyboard...

Yeah... once you get used to Ableton Live, I'm afraid ANY hardware (unless it's an open keyboard running Live!) is going to be a poor substitute.

And that's kind of the way I feel about it. For fast arranger play captures, an onboard sequencer is OK (just!), but compared to the better software sequencers, loopers, live triggering combo software's like Live, the on board sequencers as full sequencers are horribly crippled. Kind of like writing with quill and ink, just for the antique-ness of it. I always prefer the best MODERN tool for any task, and no on-board even comes CLOSE, IMO...