All true. It would be a trivial matter however to watermark the DLL, and that would be rather difficult to get rid of because the tools to do so don't exist for PocketPC (I'm thinking EXE encryptors and compressors, etc.). Johan, is this something you might be able to provide for paying customers (after they have paid naturally)?
Ultimately this isn't a big deal, but I always prefer a completely self-contained EXE to a bunch of required support files (I'm kind of old-school with the "just copy the files over" installation mentality). No biggie either way though, just exploring options.