Well so far it has been fairly smooth sailing, although the conductor looks confused about 1/3 the time.

I've been putting 4 PHL-PAO segments on one e-Ticket and 4 PAO-PHL segments on a second e-Ticket so I have a "morning" and "afternoon" PDF for scanning.

One time the conductor asked how many people were traveling together.

Another time it seemed to take almost a full minute for the conductor, after scanning, to search and select a segment to use. It think it's because I did the "reservation" for consecutive days (like Aug 20,21,22,23) and ended up using them Aug 21,22,23,24... so the conductor had to go back in time to find the Aug 20th unreserved segment.

One time I present my Android phone for scanning, it worked but took a few tries. I'll stick with paper printouts for now.