No, I know you discussed this but I can't imagine someone going through every pack this way. There must be another formula to find a spot for these packs. The odds just aren't there to know where they would be in a case. It's like a needle in a hay stack.
The guys that are "pack searchers" are quick and good at looking through the packs. It probably would take only 10 to 15 minutes to go through a gravity feed. I know a guy that does it for sports cards and he can hit the jersey cards and autograph cards with no problem, it's all about sliding the cards and seeing what's in there. It's pretty tough to do it for Wackys, but it looks like it can be done.
Look at almost all the sketches and foil autos for sale on ebay, almost all have been from sports card pack searchers, except the ones from cardgarys.
If these guys weren't "searching" them out of packs, there would be even fewer on the market.