As jackknife said, the tools on the Pioneer-sized Alox SAKs are of a stouter build. The tools on the smaller Alox models, like the Cadet, or like the Minichamp or Classic, are the same size/thicknesses of their same-sized cellidor equivalents. IMO, the awl on the Alox models is much better and more effective than those on the cellidor models.
My favorite Alox model is the basic Pioneer. I often carry my cellidor Spartan over it, because of the corkscrew and mini-eyeglass screwdriver, but I am fully aware that the Pioneer is more durably built. I've accidentally dropped my Pioneer onto a hard tile floor, with zero damage to the knife, other than a very, very tiny dent on the end of one of the aluminum scales. I'm pretty sure the cellidor scale(s) on my Spartan would have at least cracked.
IMO, the Alox scales aren't all that expensive, considering the advantages they provide.