There is no possible way the wb hole gives enough clearance for the paradox for a fingers shot arrow.You obviously have no idea of how much flexing that arrow actually does. So.... here's a video for you to watch.
http://www.wernerbeiter.com/videos/Demo_3.mpg
Even though a few - very few -people are using a wb for fingers shooting, the blasted thingis NOT an optimal rest for shooting fingers. Forget the flippin' hole... I'm not even sure the
outer ringallows enough clearance for a finger shooter's paradox. Do yourself a favor and use a flipper.
You want arrow containment?

Kwik-Loc arrow holder. $7.95 at Three Rivers. That doodad has worked like a champ at keeping arrows onrestsfor 40 years. As soon as you start to draw, the clip releases the arrow and you're ready to go. If that's too expensive for you, there is another version of the same idea at Three Rivers for 3.95, called the Aro Lock or something like that.