- Familiarity: I've put it through the wringer
These are my favorite all-around climbing shoes. I need a wide toe box, and the Mocs stretched just enough for a comfortably snug fit when I went a half-step down from my normal street shoe size. The leather upper conformed nicely to my feet.
Mocs have sensitive soles, so they work well for smearing. I've also used them for cracks, where they've done just fine, but if you're going to jam them into a lot of rough granite you can expect the rand to separate a bit up front. Also, if you really have your toes scrunched, you're not going to be happy after a few pitches of hand cracks. (That probably applies to any shoes.) For steeper face climbing with small holds, these aren't ideal, but for longer routes I'll take them anyway since they're so much more comfortable than my more aggressive shoes (Evolv Pontas). Smell better, too.