@Draconilian
Let me think about the GMship a bit. 
While it was something I wanted to get out, it isn't a high priority at this stage :P
As for super acrobatics you might get away with Enchanted Shoes.... but you'd lose the Spear weapon.
Heightened performance is a trait attained by two Traditional Type Magatama though so it probably wouldn't be allowed otherwise.

Parkour: I'll be honest, I don't like it. 
It's an overused character trait and I've seldom seen it being put to good use. If you want you could note it down as a normal trait of your character, but it wouldn't be anything out of the ordinary. Obviously you'd need to add a bit of info regarding how they attained or became interested in athletics if you do though.

@Loremaster
Haha, I was actually thinking about wounds earlier myself, and my conclusion is;

Wounds do carry over from both worlds.
Under the contortion of logic principle any damage caused it one world carries over to the other so it's only natural that character injuries do too. To prevent our characters from looking like they've been put through a meat blender though I've decided that characters recover at an alarmingly fast rate when they're awake (In the real world). While a blinded eye or severed limb could take a few days, a fatal stab wound to the chest could be gone in a day whereas scratches and bruises would be gone within an hour or two. As for "Falling down stairs" it's your job to create a believable excuse, and my job to determine whether the people around you believe you or end up believing something different.

Draconilian expressed interested in a spear/polearm type weapon on the first page of this thread so I'd have to say that spear-type weapons are currently taken.

As for scarfs I imagined the Hagoromo of a Tennyo for some reason :/ 
But you're right, it sounds like something out of Harry Potter xD
As for the protective scarf the only thing I could come up with is it being made of a endurance based fabric. Pretty much acting as a flexible shield/armor type thing. Though as stated under Enchantments it'd be restricted to utility (or in this case defense based scenarios) exclusively.... Aka no towel whipping to cause serious butt pain. :P