I'm in the separate tool camp, Bondhus (ball End) Allen wrenches, in plastic holder..
My 8 and 9 are Snap on, as is the 10, short version . combo open and box end .
& other stuff .. the Multi tools are too short for decent leverage.

I have Kept my old Park short 32 / 15mm wrench to remove and replace pedals , packing.

and have a threaded 1" headset so the big end has already come in handy, too.