Interesting thought. I'm afraid this texture would not match, as the orange peal finish is more of a soft finish, where as the stucco (being made with high content of sand) is a rougher finish. Home Depot does sell stucco patch, but it's not spray on. It would be nice if that was an option. Not sure if the stucco patch is a sand base, but you would want that. Obviously, you can buy a bag of stucco mix, but I'm sure it would be more than you want. If you go this direction, I'd use a sponge to "dap" the finish on, and wash away the excess stucco on either side of the crack before it dries.
If you decide to use wall texture, I think I'd lean toward the water base instead of the oil base. You will be painting either one, which should make it water resistant, but with the water base, you will be able to wash away the excess plaster on both sides of the repair after it dries, which I think will do a better job of hiding the repair. Also, I'd practice on a piece of scrap material, to see if this indeed is the texture you want. We live in Arizona, with lots of stucco homes, and I've never seen a stucco wall that had this soft orange peel finish. However, if the crack is narrow, and you can successfully wash away the plaster from the sides, then this may be an option.