I just booked two e-tickets on AC. One was through Expedia and the other through AC's on-line "Personal Ticket Office".
The Expedia ticket had 6 segments but the statement that came back said that the e-ticket was confirmed. The Personal Ticket Office ticket was a simple 2 segment trip. Both were immediately upgraded to Executive Class using any fare confirmable at time of reservation upgrades.
The e-ticket documentation from Expedia, Personal Ticket Office (and all other on line vendors) does not provide enough detail regarding GST. This means that I have to get a copy of the sales receipt printed out at the ticket counter at the airport.
Last night it took me over 15 minutes to get these printouts (and I was the first in line)! Two problems arose: despite the confirmed e-ticket from Expedia, AC said that there is a 4 segment limit on e-tickets (I have had this problem with Canadian too) so they would have to reissue this all as a paper ticket. The simple Personal Ticket Office ticket was relatively easy to pop out a receipt for but because I had already upgraded she had to do lots of looking up in her agent book and force the ticket to print out an acceptable receipt with the right fare.
I was just dropping my brother off for his flight to LHR so the time didn't bother me. Had I tried to do that this morning when I am actually flying and will be somewhat pressed for time, I would have been royally ticked off! The only reason I have been insistent on e-tickets is that AC is having a promotion that includes theatre tickets and entries in a contest for a vacation based on e-tickets only.
So much for the benefits of e-tickets. I just may go back to paper tickets for a while until they get these and the other well known e-ticket bugs fixed.