So far. I even felt a stitch where I split the yarn.
I can't slip my marker or roll my row counter without looking. I could roll it if I'd remember which direction it goes.
You don't, I did.
I was doing granny squares in the dentist chair and when I'm focused on picturing what I'm doing without looking I'm not focused on what they're doing.
But I knit more than I crochet and what I do crochet isn't usually portable.