Tickers are used in highly speculative environments. thou negative emotions are powerful, they got no place in such

Both CXX and XCX looks great. the XX can represent encrypted characters, so the C gets all the attention.
SEX would be the perfect ticker, and CX is pretty close.
My first vote is for XCX as it can get more eye attraction and hopefully will be followed by interest.
The negative part about the XX is that it can be perceived also as cancellation attribute if not within context,
XCX is somewhat better the CXX in that manner.

The dotted lunate sigma can be great as a symbol, but lets keep it simple (as possible) for the ticker itself

grazcoin - I believe "Draft User experience walkthroughs" is my task, thou I'm not the one to call it.
It's a method to examine and evaluate functionality and usability with interfaces.

I will have a Skype meeting with Craig to find out what is the scope and exact demands at this point, as I kinda planning the UI of the wallet from scratch.
It may be possible that he wants this for the other wallets as well. I will try to find out and update, or let him know about this post.