[note: this post is not to be taken seriously]
I think it's kind of funny that the Compact model has the hook. I can just picture how that came to be...
"We're going to make a new model that is small and thin but still is high in functionality, it will be for minimalists... of course it will have a blade... what else should this one have?"
"Let's use the plus scales so we can include all of the removable implements."
"Good idea. We can also use the combo tool, that will save space."
"We can have a corkscrew with the new mini-screwdriver, fitting into the whole "compact" theme..."
"We should include scissors, which has been a staple of the classic line for many years..."
"Anything else? Let's limit this to two layers. What else can we include??"
... [long pause]
"Anyone else??"
...
"I've got it! I know what else we can have... a frickin' HOOK!"