I mean these specific skills: ecumenical/spiritism, armor training/heavy armor training. They basically force you to grind them in town until maxed. You can't just say "ok i can cast lighting now, think i'll just go and explore the world and cast that until i can cast something better". Your ecu just won't progress! Same with armor training. Can't go outside in whatever your skill allows (kinda can, but realistically, can't) until you can wear something heavier. It's unlike, say, aggressive stance, that many people just grind to 50-70 and then just go outside and let it raise as they fight mobs and people. It's not THAT important, but it's something worth noticing and maybe even changing some day.