Well Santos, if I was not a collector, I probably might have one 111mm knife at most...if that.
You are right, there is no difference other then the blade inscription...but that inscription means a lot to a collector.
The WorkChamp XL is definitely useable in size and weight. It is about the same size and weight of a large MT. If you don't need full sized pliers, the XL gives you an astonishing amount of tools that are larger then those found in a plier based MT.
The blade on the SportRatchet is an oddity. It fits between the length of a 108mm knife, and a 91mm knife. The profile is odd as well for a Victorinox blade.