Hey futuristgear,
Yes, because of the beta. I think you could leave them on exchange, but really depends which one you are using. Have you heard of decentralized exchange called OpenLedger? You can hold your PPY here till the final launch. Nobody can touch your coins here except you.
Good luck! :)
Ah okay! That explains it, thank you @eirik!
I will use BitShares/OpenLedger for sure. :-)