Interesting. The appeal would be like the millions of guitarists, people have something to watch that shows the musician really playing.
Funny you said that - Tonight I had a pretty good night - nothing unusual, but towards the end, I grabbed the wireless and walked around a bit, and left my "post" at the keyboard. The reaction was very positive! I try not to do too much that lets people hear just a programmed track (without my life embellishments over top), but for some reason - the crowd really ate it up. People came in from the dining room to "watch" WTH??? Just an old man singing ... geeze.
Anyway - I ended with "Stars" from Les Miz, and the GM recorded it on his phone to send to the big boss. Funny, funny business.