I bought the inexpensive Lionshield clear cases and tempered glass protectors from Lazada and received them before IP15PM pre-order day. Idea is to use them until my Casetify cases and arrive and I was browsing for Spigen screen protectors online.
Now that I have the Lionshield protectors on my IP15PMs, I will be keeping them on. They are good. Very value for money with good quality. I am using the Clear Premium version, $7.90 each before vouchers.
For those who don't want to pay $20+ for a piece of screen protector, can consider this.
My IP13PM is using $10 privacy tempered glass protector that came with installation frame, also very good.
Really no need to spend so much on screen protectors if you can find good quality cheaper ones.