Asking the wrong person for that one - I just use Vim ;-)
I do use a few of the Go scripts (https://github.com/robmccoll/dotfiles). There are some really nice ones (continuous build, syntax checking, continuous testing, etc), but most of what I work on has longer build times due to linking in a good bit of C.
It's worth noting that a number of JetBrains employees seem to be working on this plugin every day [1]. I suspect we'll see a proper JetBrain Go IDE before too long.
I use Eclipse with the Goclipse plug-in. I still have the command prompt on the side for some stuff but the plug-in covers a fair bit of what you need to get done...
Edit: http://plugins.jetbrains.com/plugin/?idea&id=5047