I have ordered a soft (roll up) tonneau from Truxedo. It is scheduled to be installed tomorrow or Thursday. It is the low profile version, and looks really sharp. It installs by a clamp system that you can use either the utility track bed channels for clamping or standard clamps on all four corners. I looked into this, this past week and this particular cover will NOT hinder my sliding bed extender in any way. It comes with a lifetime warranty which includes the vinyl cover and it installs in less than 20 minutes. They claim that their cover is the strongest in the industry. They showed me two guys standing on it and it didn't tear whatsoever. It seems to work really well with the utility track bed system. If you're looking, I just thought I would let you all know.