No, it doesn't. My short example assumed that the "client" maintains the current integrated architecture. If you want to split it between wallet-less "bitcoind" and block-chain-less "bitcoinui" then you have to explicitly specify which protocol you are going to use between the two halves. You cannot just hide behind a row of dashes. It has to be a two-way communication protocol that handles (a) receiving coins (b) sending coins (c) chain extension (d) chain reorganization (e) all other miscellaneous tasks most importantly "getwork" for mining. So far nobody had made any workable proposal. There is some sketch by Genjix & friends: http://bitcoinconsultancy.com/libbitcoin/libbitcoin/