I have a pair of haircalf CorsoComo slip ons and I like them. They're pretty comfortable. I've been hoping to find some with a little more arch support just because my arches are freakishly high.
While I'm not an expert like some of y'all, (looking at Angie here LOL), it seems to me that slip-on sneakers are one of those things that seem pretty classic, and don't ever look bad (unless they're covered in details that date them, like studs or spikes or something). Kind of like a classic equestrian style boot, I see more of them when they're trendy but the classic ones don't ever really look bad. So it's good to see Angie say they're here to stay.
I still fear that my leopard print haircalf ones will possibly look dated soon, but if I could find a basic black or navy then it might be more classic and last longer style wise. (Sounds like a perfect excuse for shoe shopping LOL)