Well the pivot hole on both is the question. The 93mm Alox have a 3mm pivot hole, the 111mm come in two flavors, Liner locks with 3mm pivots and button locks with smaller pivots (2.5mm maybe?). It looks like both the Hunter and the Equestrian are button locks so you will need to re-drill the pivot hole (as it is hardened stainless steel you will need to get a carbide drill and you will have to find one just bigger than 3mm, the ones I have are .1220" check McMaster-Carr). After you have the hole re-sized you may need to do some Dremel work on the tang so it fits the backspring and mounts correctly. Yeah it is a pain in the ass which is why most modders just stick with tools from one size.
You do have three other options: hand make a combo tool for 93mm out of 420 or 440 stainless (or the wonder metal of your choice), make Aluminum scales for a 91mm or use the Combo tool from the 91mm Compact (but you need to re-drill the hole and use a spacer to make it fit).