You can buy a replacement wrench for the jackknife, but you can just make one out of a wiper insert. The width has nothing to do with it, the little angled bend towards the end creates spring tension which is what actually holds it in place.
The tuxedo set looks good for EDC. Great variety of wrenches (and I'm sure there's space for a couple more), and the pick selection looks pretty solid. Half diamond, city rake, couple of different hooks... that'll have you covered for most stuff, then you've got a worm rake and basic snake for a bit of raking variety. Not too little, not too much, and there's nothing there I'd consider completely useless... so that gets my vote.
