Personally I don't think I ever wore any skill capes other than my first (summoning untrimmed) since it was kinda rare sight. The main motivation to max was probably so I finally had a good looking cape to wear and HLF access was nice too.
@wilsonmagna
My motivation to max was so that I could do all content on release. Was nice not having to train skills to do X quest or whatever.
Unslain Bosses - Clan
I don't mind the Max cape, but it's flat, much like trim. It's nice for a while but then you start to get annoyed with clipping (I think?)
Unslain Bosses - Clan