Correct, They are less wide and can be mounted in a similar fashion to figure skates and are actually easier to mount than holders that are right and left as you don't have to worry about the outside of the holder being too far off in some cases. I have only worked on 3 pairs so far but I really like it. There will be quirks as with all of the quick release. Until I'm more familiar with this Shift Holder the XS is still my favorite so far. But this one could take off.
They will send it out to you without holders attached and drilled to whatever holder you want, or without holes at all. But you have to pay for the true holders and they will send those to you too. That's what they did for me. Predrill for that SB 4.0s and the holders came un mounted.
I agree, the XS is currently my favorite holder but if these are as rigid and durable as promised I might be swayed to using them on skates other than my TRUE. I do wonder with how short the steel is, if it will break.
I had this happen today...