My deepest sympathies to the sound mixer if they are.
Having queued up there for two different shows in my time, it has all the acoustic dampening qualities of a echo chamber.
Better use would be to use HQ3 as base camp, and the very short walk into the foyer for inserts.
Plus, if they are using the foyer as main presentation point they'll have to shoot towards the studio wall/cafe, because pointing through the glass and out into the plaza will be alright, until the local Salford 'wildlife' find out, and head down to get on television.
My user name might look like Hatton Cross, but it's pronounced Throatwobbler Mangrove.