Don't let the extra key dissuade from Cigraph's products. They have some great add-ons.
There was a discussion here recently about the pros and cons of another key. For some especially those with network/multiple licenses it can be a plus as you no longer tie the add-ons to a particular key. Much more flexibility. Solo practitioners hoped we could add it via software to the archicad key.
MacBook Pro Retina, 15-inch Yosemite 2.8 GHz Intel Core i7 16 GB 1600 MHz DDR3
Mac OSX 10.11.1
"Implementing Successful Building Information Modeling"