Axe, E tickets good....at least you can't lose them. ; )
The only time an E ticket has been a pain for me was right after 9/11 and I think it was mostly because everyone was still uptight and rules kept changing at the airports. My flight got changed and ultimately I was put on Taca out of DFW instead of continuing with Continental. Taca insisted on a paper ticket and I had to run back and forth between Co and Taco a couple times before I got mad and told them to do it themselves. That happened recently also but this time it was no problem.