You can get psychological symptoms which are not technically considered "withdrawal" symptoms, since they aren't caused by a serious physical dependence, like anxiety when you don't have it. When that occurs with infrequent use, that is more a symptom of a growing mental addiction. I would try not to take it so often. One can become mentally addicted to having it to reduce anxiety, help you sleep, etc, even if you're not taking it often enough/long enough to gain a true physical dependence. And watch out for things like wanting to take it more often.
As to your original question, alcohol and benzos do have cross-tolerance. Whether or not the doses of alcohol and clonazepam you are taking are large enough or often enough to cause very much tolerance is another issue. Everyone is so different and it depends on your metabolism, how much alcohol affects you (for example I would be really drunk off 3 beers, whereas someone else may only feel a very slight buzz), how often you are drinking, whether or not the days you are drinking or using benzos are in a row or have breaks between each, whether you find you have a higher tolerance to alcohol when you drink 2x a week as opposed to when you drink, say, once every 2 months, etc. From what you said about your situation I would say that it shouldn't give you too much of a tolerance, but you would still have a higher tolerance than someone who doesn't drink alcohol at all.
