Selective Invoice Printing

SOLVED

Im just wondering if there's a way to set it up so certain accounts to NOT print the invoice when processing an order and the rest to continue to print as per usual.
The reason is that we're having more and more customers switch to emailed invoicing, but our default process is to print and then mail them.
If there's a wait to lock it so certain accounts will never print the invoice, that'd save us from checking each account.