My wife does that on the first few days while she waits for a real screen guard. It drives me nuts because it feels terrible and is meant primarily just for shipping it. So, no, I dont think you should use that.
There are incredible deals right now on screen guards so just buy a set if you're really worried. But for me I go without a screen protector because the glass now is so scratch resistant that I feel its unnecessary.
Edit: Screen Guard Deal
XtremeGuardz 85% off 2 or more
85off2 (85% off 2 items)
80off3 (80% off 3 items)