Sure, it will work. One moment: configuration file parsing is very stupid now and have several restrictions:
1. "press" must be lowercase
2. Spaces can be only around the colon
3. Keysym must be exactly equal to X11's list. And they seems to be case-sensitive (actually i just call internal function of X11 to read the keysym). You may refer list in this header file: http://skriblovsky.net/maemo/keysymdef.h .
For example, Space key should be written as "space", lowercase. In next release i will try to make keysyms case-insensitive.

So, you should rewrite the line as follows:
press(space): shell(microb)

I checked this on my tablet right now - works like a charm

Windows decorations become a bit larger and font is now more readable.

About 'potential bug': yes, it is bug, active window should be highlighted Kroll, i will add option for disabling selection completely. But if someone wants to use hardware keys for navigation, we should not make him to do additional keypress