Apply it on a per-buffer basis

I found out about this vim plugin when looking for a way to soft-wrap a vim buffer to a specific width. So in reality I do not need all of its functionality, but even with all the extra stuff, it fits my need. Except for one thing: I'd like to be able to apply this to a specific buffer, but not to all of my open buffers. Is there a way to use it like this?
