Nope...there is a place for some flashy stuff, generally at the end of the demo, and only if the demonstrator feels it will not intimidate the client, or clients from trying the instrument themselves...a concert performance is different.
Baartmans and Harris don't always play complicated tunes...it will depend on the situation.
BTW, I have an S910 on order....hopefully I'll get one in late October, or early November.
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.