ipad to ipad mirror

At a client meeting - I want to give the client/s an iPad each and let them watch what I have on my iPad.

I could show a presentation in keynote without needing to attach to tv or screens etc etc.

Imagine how easy presentations would be...

Any ideas if this can be done?

I can do mirroring, it works.

I can attack via bluetooth and even via a wireless hotspot in my iPhone.

so - I figure attaching one iPad to another is feasable?

Yes, - yes?

Anyone got any apps or ideas how I can do this?