Not me. Most of the mailing vendors were in Chicago, not Dallas and I don't have the time to go to both. Print 19 was very productive if the right vendors were there for your business. The show floor was pretty small though. Xerox was plenty busy since they were the only game in town.
Sustainable Printing Goes
Far Beyond Using FSC Certified
or Recycled Paper
This informative paper on deinking: demand, principles, problems and solutions also explains why printing technologies are not all equally compatible with paper recycling systems; and why just a small fraction of printed material in the paper can cause difficulties. Link To White Paper