I logged onto my Flames account tonight to transfer the ticket for Wednesday's game to my friend, and look at what I found...
Every game is tagged with this "Mobile Entry" icon. So, I went to the Flames app on my phone, logged into my ticket account and lo-and-behold, I can view all of my tickets for upcoming games, and it can generate a QR code for each ticket, so you no longer need to print out tickets or carry your STH card (I guess you'll still need it for FanAttic discounts).
I forwarded the ticket to my friend and told him to check if it worked for him as well, and sure enough, he could also open the QR code for his ticket, so he won't need to waste paper printing out the PDF.
The future is now!