Haven't seen any myself, but the TRC windows wallet is working for me under the latest wine beta.
Curious as to why one would go through all that trouble in Linux?
Why not just compile it?
qtcreator will make compiling the QT (gui) version almost as easy as installing a client from a windows installer.
ADD:
Install qt creator however you want. apt-get, aptitude or whatever gui software installer your distro uses, just search for qt creator.
Download the source from: https://github.com/terracoin/terracoin
Start up qt creator and point it to the terracoin-qt.pro file.
After parsing, the little hammer icon (compile) will go from grey to color, click it and it will compile Terracoin for you.
If you have trouble with dependencies, just post here. There are a few, but they are common and not hard to install.
