[@vancexentan] I put this together as an idea of the skills one could get out of Genius, though obviously only one or two at a time.

[hider=Skill List]
Item Construction (mundane but advanced Inventions)
Disengage
Human Anatomy Understanding
Incitement
Knight Tactics
Marksmanship
Martial Arts (Pankration, Chinese, Swordsmanship, etc.)
Military Tactics
Modern Sciences (a wide variety of things unlikely to be useful in a Grail War)
Riding
Self-Suggestion
Single-Mindedness
Torture Techniques
[/hider]