Unfortunately no - As outlined in the User Agreement:
Your sale is not eligible for coverage under PayPal’s Seller Protection program if:
It involves an item that you deliver in person, including in connection with a payment made in your store location.
Although the use of an invoice is very convenient for both buyer and seller, if you're going to deliver something, there's no PayPal seller protection. And if you look at the section in the User Agreement under Buyer Protection, there's also no Buyer Protection - note the section:
"Payments for the following are not eligible for reimbursement under PayPal Purchase Protection:"
For Item Not Received claims, items which you collect in person or arrange to be collected on your behalf, including items bought in a seller’s store location.
