Tonneau cover use with a vented 5er tailgate??

I have a roll up tonneau cover and have the fiver tailgate. Yes, I use them both at the same time. There is no way a lower pressure area will cause the cover to balloon up. The tonneau cover will act exactly the same as it would with a regular tailgate. I switch tailgates and have not even had so much as the velcro even think of coming apart. You will have no issues what so ever with a tonneau cover.