Sion notices the nervousness. And while he can think of a few possible reasons for it, odds seem to be good that it's a case of wanting to demonstrate the game but not wanting to pressure anyone. In which case, given that Sion admittedly is curious about the technology in question...

"Well, while I admit exploring is tempting, it might be rather more worthwhile to see a proper demonstration of this device's capabilities while there's a chance, wouldn't you think?"