Nice, will give it a try as well.
The new update allows one to trigger macros with a double press of a key-combination. I was a.) running out of shortcuts; or b.) always forgetting the more intricate and less-often used ones...
Example - my inability to remember the keyboard shortcut combo for jumping back and forth between open Safari tabs.
With KM, I can now hold down CTRL, and double tap "1", to jump to the next tab. Or I can hold down CTRL, and double tap "2" to jump back to the previous one. Easy.
Other example - [1st world problem], the schlepp of moving my hands off the keyboard to the trackpad, to select the text underneath the cursor. KM = double tap SHIFT+[up arrow] = text selected.
Silly little things like the above, but being able to do that with zero fuss, and no scripting knowledge, has me smiling!