Attorney at closing? Absolutely necessary or overkill?

[Carlton Wood]

I'm too weeks from closing on a four family house in Delaware county PA (my first property) and my attorney and my agent have conflicting schedules on closing day. I am aware some states require you have an attorney present during closing but Pennsylvania does not. My agent is telling me none of her clients ever bring an attorney to closing and as long as he's reviewed all of my documents prior to closing i don't really need him there. But of course she'd say that, shes trying get this closing over with on closing day at a time convenient for her. I've already paid the attorney a flat fee that pays for him coming to closing. At the same time i don't want to incur more cost by pushing back closing unless its necessary. If my lawyer has reviewed all documentation prior to closing do i need him at closing??? would it be worth it to pay a little more and push closing to a day that works for him or is him being there overkill????