As a bookbinder in the US, I prefer metric over inches/feet as it is the most efficient and quicker measurement for fine binding of books. As a typographer, metric does not cut it - NOR does inches/feet. Points/Picas describe font measurement in Europe and US. In fact, Didot a French type designer from the 1700s was the first to establish the point/pica system to produce some of the finest typographic families in the world. For type, it is the most efficient and quickest measurement whether in the US or Europe. It is not just an "American" system and it is not an outdated system. It is a system with a specific purpose and it should be included for any designer concerned with accuracy paired with expedience.