There is not too much to be shown (as screenshots), as it is basically a tool to help you move windows, resize windows, push windows between different screens, etc... The best (for me) is to check the comprehensive documentation provided on GitHub (https://github.com/jigish/slate/blob/master/README.md), and, even more, to play with the configuration file (~/.slate) to see how it works. You can find also on GitHub a default configuration file, which gives a nice overview of several features. Cheers.
The same here... Spectacle is very simple to setup... But Slate is so much more flexible. After some minutes I covered all my uses of Spectacle and introduced some new ones (moving windows around is just amazing...). Great job from Slate developers, keep up with the good work!
I also hated to have all my windows flying around when I would (un)plug my MacBook Pro from external devices... Some time ago I discovered Stay (http://cordlessdog.com/stay/) and now I have no more problems with that. It is great, you can define position of windows for all your different setups (profiles). In my case I mostly have two setups, at office (where I work most of my time) I plug my MacBook Pro to an external display and when I am at home I work directly on the MacBook and sometimes I connect it to another external display.
I am a big fan of being able to just work whenever I want on my computer... but I also am extremely big fan of plugging it to external displays and use ergonomic devices, and I try to use them as much as I can. At my office I use a Kinesis Freestyle and a trackball, and am very happy since I started using it. We spend so much time in these "positions" that we should minimize possibilities of having problems and be confortable... at the end we want to keep doing this for long time ;)
