Focus follows mouse or click to focus?

You might be interested in dwm; it's less focused on customisability, and is where the tag concept originated. Its default behaviour is focus follows mouse, but you can change that to click to focus using a little patch http://dwm.suckless.org/patches/focusonclick

You can also focus using the keyboard, using Mod-j / Mod-k to cycle through windows on the current tag(s); I imagine this is the same with Awesome.