Nope, you need just as many as before, although one is now smaller.
Having to use a key to unlock/remove it and then using the QR is not much difference, in time, to just using a security skewer and needing a special allen key or spanner.
I'd also like to see how well it would stand up to someone just trying to lever the QR open (possibly damaging the frame but still being able to make off with a wheel.
Those videos are utterly unconvincing.
I'm out (before I was in).
LessFewer locks:-Having to use a key to unlock/remove it and then using the QR is not much difference, in time, to just using a security skewer and needing a special allen key or spanner.
I'd also like to see how well it would stand up to someone just trying to lever the QR open (possibly damaging the frame but still being able to make off with a wheel.