KLM has the biggest base of Embraer in Europe and has learned how to manage them in a profitable way flying to/from small airports and/or high revenue destinations mostly biz-driven. The comfort Embraer delivers is for me unbeatable on short haul...especially when you travel with a partner (for biz or leisure).
For this reason I'm likely among the fews that prefer to travel in Embraer whenever it is possible vs standard A318-319-320-321.
A bit off-topic, AZ has many Embraer too (especially E175) and unfortunately consider them unprofitable but IMO because they never learned how to use such planes properly with few exceptions (like the routes between LIN and LCY, BRU or FRA).