We have not eaten at PM since the tip has not been included. After reading the back of the bill pictured in the link, I would also figure tip was included with my total bill, due to the wording.
"A 10% service charge and sales tax will automatically be added to your bill."
It states
1) service charge
2) automatically, along with the sales tax.
To me that would not mean leave money on a table for a tip. I certainly would not leave money on a table to cover sales tax. So why would I think I need to for an automatic % service charge?
If a tip should be left on the table, that is how they need to word it.
I would consider a specific % for a service charge to be added to my bill, as it states.