VIX usually doesn't go below 15 (but it can), so a CALL can be profitable. Depends on the strike.
Realize however that VIX options are priced differently than other options. They are priced on the VIX futures, so you are paying for intrinsic value based on what the market thinks the VIX will be at at expiration. This is different than other options. You always need to know how options are priced.
here is a link to a good article that I received last week from Tycoon Reports...