Tachi was being a bit silly with his description, so I'll clarify for a bit: it's basically a transformation belt like I intend to have, only it's based on a different Kamen Rider series and works somewhat differently. And going with the way things work in that series, the way you described would kind of lead to said demon eating his soul and taking his body for its own in order to inact it's evil deeds. ^^;

I can assure you that the transformation belt [i]is[/i] a basic thing to begin with, though, so you don't have to worry about that.