You will encounter the same limitation since you still need save as PDF to generate the PDF to attach.
There is a rather complex work around if you set up all the bits and pieces correctly.
A script can run in FileMaker Pro on the host computer or a computer linked to it that periodically performs a script. The script would check for new records in a "request" table and if it finds any, it uses the info entered into fields of that record to find records, save as PDF and email out the attachment back to the originating user.
A user would use a script and/or enter data to create a new record with the needed find criteria and email address in order for this script to be able to do its thing.