| awalloftext |
The whole "is the +4 from the shield or from cover" thing is made even more murky by the fact that, on the actual statistics for the Tower Shield, the +4 is listed as a potential option for the shield's AC bonus in parentheses. It just has the little note for how to actually activate it.
There's also this sentence I'm the rules for shields, which immediately follows the section on raising shields:
When you have a tower shield raised, you can use the Take Cover action (page 418) to increase the circumstance bonus to AC to +4
... which to me, is frustrating because its not specified if you're increasing the shield's innate AC Bonus or the cover's bonus. I tend to think it's the shield given the surrounding context, but the Cover interpretation seems like a common one.
I wish they had changed the wording in the remaster to make it more clear. Something along the lines of just "while you have your tower shield raised, you can use the Take Cover action to gain the benefits of Greater Cover" - that, along with removing the (+4) under the item's "AC Bonus" would've sufficed for clarification.