I don't know about ass handling but I certainly don't intend to kill anyone off :P
Knowledge of SMT and Persona help in understanding, but as I said initially aren't necessary so that's not an issue.

As for reused characters, there's no way for me to tell the difference between a used and new character now is there? Especially since the old guild is gone and I can't stalk previous posts :P
Either way reusing old characters is completely fine as long as they're adapted to suit the RP.

As for weapons
Spatroi (Gladius): Since this is a traditional weapon I have no problems with it. Others should note however that I classify this as a sword. I might allow one more sword since it's the staple weapon of choice most of the time though. Though a second sword would either had two be a two-handed sword or something different regionally like a katana.

Suseri-Hime (Scarf): The description provided is way too vague for me to make any specific comments.
I imagined a scarf that moves around on it's own accord and blocks attacks, but that would be a Traditional x Enchantment mix. For a moment I imagined a scarf that turns the wielder invisible, and that could be accepted under some restrictions... but that's not what you're suggesting is it?
I could picture some sort of scarf that acts as a protective charm/barrier/repellant for shadows.... but that idea needs to be refined more.

Extra note: If people are fine with a common weapon like a baseball bat than you can opt to have a Weapon Ability for use in the real world. Abilities work equally well in both worlds so if you'd rather focus on utility that's completely unrelated to combat you're more than welcome to do so.