Hello KattC and Liam_M, I had this discussion with a client yesterday. Whilst it is possible to print a packing slip using the Print/Email invoice screen, this is a very complex and unwieldy workflow for a single transaction.
What users would like, I think, is to be able to print a packing slip either when the sales order or invoice is recorded (without printing an invoice), or from the Print/Email options at the top of the invoice edit window.
For my client, the approach was to customise an invoice form to look like a packing slip, then to email it they print to a PDF writer, then attach it to an email using Outlook. This is also not ideal, but Emailing from within a sales transaction doesn't give the option to select a form. (Separate idea here). And the Email tab of the Print/Email window doesn't allow the same selections (eg Invoice type: Packing Slip Item) as does the Print tab.
Could this suggestion, and a number of others relating to packing slips, be considered as one project for your developers. I'm sure that a lot could be done to improve work flows around packing slips.
If you would like me to raise a new idea, please advise, or can we revert the status on this one.