Are SK5 blades better than standard carbon steel utility blades?

SK5 is a high-carbon tool steel that holds an edge longer than the cheapest stamped blades, and several candidates here (REXBETI, WORKPRO, the auto-reload knife) advertise it. Reviewer consensus is that SK5 is a meaningful step up from no-name blades but not dramatically different from quality bi-metal blades from established brands.