Cool, glad you're finding use for this new unit

I look forward to any demos you post. I agree for the arranger player, this may be a little difficult to use in a live situation--which is where the onboard VH's come in handy. However, in a studio or live band this beast will probably shine like there's no tomorrow.
personally I don't see the 10 seconds as too much of a limitation. That's a decent amount of time for a looped vocal phrase. I like that you can use it "live" in the way Don Lewis did in that demo.
Enjoy your new toy--keep us posted on your progress with it as well.
Regards,
Squeak
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GEAR: Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller). SOFTWARE: Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.