An interesting concept that doesn't actually work
On the positive side they took space that would have otherwise been seats without power and replaced it with seating that offers charging, food, and drinks. And unlike other reviewers we had very positive experiences with our server and reasonably positive experiences with the food and drinks.
On the negative side none of our three orders we made (we were stuck in YYZ for a while) and none of the orders from the tables immediately adjacent actually 'worked'. On my first order one of the two drinks was wrong. On the second, my wife's order - a diet coke - simply didn't come for 20 minutes until we asked a passing server. On the third order, a couple of back-and-forths with our server were required to get all our coffee drink orders right. And as I mentioned, everyone around us had similar issues as well - the 'order via iPad' concept just doesn't work.
That said...our family did have comfy seats with ample power and food/drinks more or less on command. Which was a wonderful thing while you're stuck in an airport waiting to make your connection.