Neither the synergy nor the amount of skills is worth the damage malus on a Hybrid. Especially since the non magic skillschools now all feature dex/str based sword techniques that look and work like actual magical spells. And don't forget Hybrids have to actually spend more points in Memory too, completely leading the initial thought of implementation ad absurdum.
The only reason to build a hybrid is roleplay. They have no mechanical advantage. They're always weaker.