I plan to support it in PAPER as well. A big part of the original rationale for PEP 723 (and 722) was to support people who want to distribute a single Python file to colleagues etc. without worrying about Python packaging (or making a "project"), and allow them to run it with the appropriate dependencies and their own local Python. So while I am trying to make a tool for users (that incidentally covers a portion of developer use cases) rather than developers, this definitely fits.