In the experimental binaries, which can be found here, NoodleDoodle included a tool called trezorctl . With this tool you can convert your Trezor mnemonic seed to a mnemonic seed compatible with simplewallet. Thus, using this tool allows you to, after conversion, restore your wallet using simplewallet. The tool works as follows. Note that <word_list> is your 24 word Trezor mnemonic seed. On Linux and Mac OS:

./trezorctl recover_mnemonic <index> <passphrase> <language> <word_list>

On Windows make sure to launch it from the command line. Go to the folder monero-cli-wallet is located and make sure your cursor isn't located on any of the files. Subsequently do SHIFT + right click and it will give you an option to "Open command window here". Lastly, type the following command:

trezorctl.exe recover_mnemonic <index> <passphrase> <language> <word_list>

The default language is English for seeds. Note that simplewallet also supports Spanish, German, Italian, Japanese, Russian, and Portugese. Lastly, the trezorctrl output looks like this: