Interesting, so about 26 KB just for a ZeroCoin commitment and niZKP in the scriptsig alone. That's the same as from libzerocoin.
Yeah its fairly large and i have a feeling its going to get bigger and bigger /coin
so if you want to "anonymize" 1000 coins, you need to mint 1000 coins, and spend 1000 coins. 25mb of transactions to spend 1000 coins? Huge fee!?