That would be very difficult, and I'm sure will prove to be a major deterring factor in the early adoption of this new currency.

Their old "zerocoin" project website had a neat infographic depicting it's simplified usage: http://zerocoin.org/media/images/zerocoin_blockchain.png

Although I haven't fully read the zerocash whitepaper yet to know if they're still headed in the same direction, I believe that they are.

There is also the Q&A page on the new zerocash-project.org website: http://zerocash-project.org/q_and_a