I have found PPU and Hornady brass to be a little soft. You will likely not be able to run similar pressures as you would with Lapua brass, but unless you are pushing your load really hard, you may not notice. Primers pockets may loosen quicker but then it is exactly the same with Hornady brass in my opinion and PPU is a lot cheaper.
Make sure to verify the length of the brass. I have seen some cases that were not trimmed for length and had necks a LOT longer than the remainder of the batch. Other than that, my experience has been fine.
When I get a rifle with a new chambering, often PPU loaded ammo is the first thing one can get your hands on. Just about any loaded ammo has been in short supply the past few years and I have shot my share of PPU ammo and then started load development with the brass.