This is fantastic project! When exchange? 
Yes, PIRATE is a fantastic project, afaik komodo team is working on details for how centralised exchanges could list a coin like this with only anon z transactions by default. Some technical things to work out, but hopefully soon we can trade this wonderful addition to crypto privacy, fungible digital cash!
Some exchanges want to kyc devs now to list coins, or at least have a real person to deal with from the dev team. Also, with PIRATE the problem might be how to track down lost payments for support tickets, with anon z only transactions the exchange will need to factor in other ways to track deposits and withdrawals, they can't use a block explorer, or payment Id's like monero. It's possible, they just need to be motivated to do the work, PIRATE isn't a regular plug n play crypto, that's why it's so promising!