Decide what is important to YOU and your studio ethic. Your drawings can have personality and reflect your style. This may or may not be good. Crisp drawings lack personality but they are clear and precise. Hand sketches and stylised work have personality. They can be suggestive and explain complex ideas but can also distract from the main message of the drawing. Information loaded drawings can be shown using a clear or complex style. Decide if people will look at your work for seconds or minutes.
Clarity vs Personality