I am mostly a guitarplayer, but have used the Tyros to play polkas and marches and sing-a-longs at weddings. I have also built midifiles with the styles and onboard sequences quickly. But now I am into studio backings and loop sequencing. Drums on demand and now bass in demand make fabulous live drum and bass loops built up as style sections. This gives me a backing with a sound quality that unfortunately the arrangers of today can't match.
Also, Yamaha is so anal retentive with their new stuff, ie. Digital Music Notebook which is very limited to what you can do with it, and no sequencing software like XG Works to edit yamahafiles and styles. It's a protectionism that I can't be bothered with anymore. I hope the forum will continue to evolve and also include not only keyboard arrangers as this market has tapered off a bit.