I use the professional 3M double stick foam tape....it's way neater than any contact cement and doesn't leach or off-gas fumes and warp car bodies years later.
As has been discussed thoroughly for some time, and presuming both tape and cement have been applied properly:
Sticky tape is just fine except that no one knows exactly how long these sticky foam tapes will in fact last.
The latter statement re: contact cement is un substantiated urban myth throughout and should be firmly retired- forever.
