Originally Posted by Watchman
Extremely unlikely. The steppe nomads were big on archery from the moment they figured out how to ride a horse, and nigh certainly even earlier. Throwing-spears have their uses, even for horse-archers, but precious few steppe cavalry ever lacked a bow (as you may note in EB, even those capable only of close combat due to engine limitations are modeled with bows).
"Pure" lancers were always more of a sedentary-folk thing, partly due to the different character of their warfare and partly as they had a harder time developing and maintaining horse-archery skills than the steppe guys (who learned it in everyday life).