Aren't you always taking some kind of directional risk? Isn't that what the market is paying us to do? It doesn't matter if you are in a spread or not. Traders get paid for taking on some sort of risk that others are not willing or capable of taking.
I can't find any scenario where you get paid money and take zero risk.
Of course you are always taking a risk. No one has said otherwise. The point of a spread is not to get rid of risk but to take risk. However, the spread allows one to create value where it might be lacking otherwise. All traders are seeking value, not risk free opportunities.
My 5 day NL is 0 and the MVI is 4. (Just a newbie talking to himself here.)