And for that matter, I would be fine with import/export only being available from the command line and not in the GUI at least initially.
There is a pull request on github that implements commandline/RPC functionality for importing and exporting keys:
https://github.com/bitcoin/bitcoin/pull/220I'd need to merge this anyway if I want to expose it in the GUI.
FYI, the current code appears to have lost the ability to call RPCs (at least from the command line). I get:
macpro:MacOS erv$ ./bitcoin-qt help
error: basic_string::_S_create