If I was handed a repair order (in my 25yrs as a dealership mechanic) stating replace the seals, I replaced the seals. It's a no brainer that my boss would have me redoing it again for free if they leaked, or if the owner was unhappy they were not done. That repair order is a contract. If I dont think they need replacing or I just dont want to change them for my own personal reasons then the customer must agree on this change before the new timing belt gets put on, period.
Now my own opinion. I dont think you need those seals replaced. When I did my belt at 110,000 I left the seals alone. They still dont leak at 170,000 miles. Heck I didn't even need the belt, water pump and all the bearings I did replace. They all looked great. My jugement call was to leave the seals alone.