I had the Binax Now tests (which have 2/box) and, yes, we opened in front of the proctor. I think we could have used any test we had on hand-I just find the Binax ones the easiest to use.
The one thing I was not prepared for (but luckily found quickly) was the order confirmation number. This is the number that will come in the email right after you purchase, but before you schedule.
The whole Zoom call felt very rushed. Be ready with everything when you join the call. And our proctors (for both sessions) were already online when we logged in at 5:58am.