If another replacement effect would also change the number of poison counters a player receives, such as that of Vorinclex, Monstrous Raider, the player receiving the counters chooses which one to apply first, regardless of who controls what permanents
Normally that could make the games annoying to play or very luck dependent but with this format and the large card pool, it means you need to adjust your strategy based on what you get
It will obviously take a long time to get there, but TCGPCollector is essentially recommending players play the long game and not be tempted to exchange Pack Points for cheap cards they'll come across in booster packs eventually
Later we'd get the pricey Shifting Loyalties, or the flexible but pricey Shifting Loyalties
If youre looking to jump into ripping packs or want to sit on a few boxes for a bit and try to offload them later, these are the cheapest Pokemon TCG boxes around
So yes, your tokens are temporary