From my understanding resistant doesn't mean an ASIC can't be created, just that the cost to create the ASIC would be too high compared to the returns that would be gained by it's use.  In experimentation as a hobby (not to make a living) I have mined Scrypt, Qubit, Grostle and a bunch of others with CPU and with GPU mining.  In my experience even those where there are ASIC miners produced coins when in a pool, but each coin I tried when playing around with mining did produce some significant differences in income when sold.