Once you use a bit of dual lock you will not go back to regular velcro.
Until you decide to move one of the pedals on your pedal board....
Dual lock is too much for me. I have actually destroyed the bottom (of a cheap pedal), because the dual lock would not come apart when I needed to take the pedal off.
I've probably built 30-35 pedal boards (guitar player), and I'm really anal about things needed to be 'screwed and glued' into place.
Regular velcro is the way to go. We're not hanging our pedal boards from the ceiling for 8 hours. Pedals will never move using just regular velcro, and you won't destroy your pedal removing them later.
If I need to firmly attach a pedal (heavy or large), I will remove the feet (screws), put a piece of thin tin strapping with holes in it (used for duct work) between the device and the foot, and screw it back on. Then screw the strapping to my board.
I love building pedal boards.