Been doing a lot of reading on the site and there is a lot of great info as to width & grinds, points, etc but I have not come across any information on the length of a blade. The pictures I see seem to show a wide variety of over all straight lengths. Is there a standard length of blade? Are the scales longer for just looks or is there functional aspect? As a total noob is there a certain length of blade I should be looking for? I'm guessing that a shorter blade may add a certain amount of control where a longer blade less maintenance?