What does it do?
SpecSwap is designed to integrate dual specialization with Blizzard's new Equipment Manager. If you're anything like me, you have a specific set that you like to use with each of your two specs. What SpecSwap does is automatically swap your gear set when you change your spec.
Why would I want it?
Well, unless you like using huge mods to do the simple task for you, or you enjoy monotonously changing gear manually, then there is really no reason not to if you're already using Blizzard's Equipment Manager. SpecSwap is tiny; and I mean really tiny. The download is less than 1kb. You just can't beat that!
Okay, so how do I set it up?
SpecSwap uses slash commands (which can be acccessed by /sswap). To clear up any confusion, "spec1" is your primary spec and "spec2" is your secondary set. So, for example, I use a gear set named "PVP" with my primary spec, and a gear set named "PVE" with my secondary set. To set this up I would type this:
/sswap spec1 PVP
/sswap spec2 PVE
It's as easy as that!