Nope, it's simple by design. Project.vim seems mainly for projects that need to pull in files from all over the place and probably fulfills that goal well. If I need to search the working directory, I'll use ':!grep -RI "term" .' (or vim's grep which is pretty nice).

I say that project.vim stinks because it's awkward and its usage is unclear. Maybe I've never "gotten" it, but I think there are many others like myself who really, really wanted to like project.vim but just couldn't use it.

I have my mind on other goals. One is to add a toggleable split that gives useful version control information by integrating with the VCS plugin.