my groups are
1 for scout
2 for 2nd tech/scout
3 for 1st tech
4 for nexuses
5 for special tactics
6-0 are my army control groups
f1-fn are for camera positions - nexuses
i modified grid so I have a-move on Q and units skills on ZXC, after that warpgates under TAB. I use lots of ALT for asignments also SHIFT and some CRTL. SPACEBAR goes for unit types switch under groups. I find this set up totally freaking awesome. Cheers.