Someone mentioned this in the telegram chat earlier and I investigated, surely enough the OPEN.PPY asset is available to trade using Bitshares' decentralized exchange. This asset can be withdrawn for native PPY using Openledger's gateway.
I'll be setting some BUYs if anyone wants to SELL!
Edit: it appears real PPY still can't be exchanged for OPEN.PPY yet using the @openledger gateway service. Hopefully we will be able to soon since the pairs are live.