QuickSwap is an addon for cycling between weapon sets. In WAR this can be done outside combat only, but I've still found it very useful for going between 2-hander and 1-h/shield combo. It's currently used with slash commands and requires you to have LibSlash installed.

QuickSwap usage:
/qs help - this command list
/qs save - save current weapons as next set
/qs save # - save current weapons as set #
/qs sets - print sets
/qs clear - clear saved sets
/qs - equip next set in cycle

Of course you don't want to type a command every time you want to swap weapons. If you make a macro to activate QuickSwap, you can put it on your hotbar and set a keybinding to it. It should look like this:

/script QuickSwap.Command("")

When you have two copies of the same item, the one closest to the bottom right corner in your bags will be used. QuickSwap also tries to put weapons removed from hands to a position near that corner.

Future developments:
- A proper keybinding for swapping, should be possible. Then no macro would be needed.
- If I find a weapon that you can wield two copies of at the same time, handling that.
- Comments welcome!

If I make a proper graphical UI for QuickSwap then I want to allow saving your whole gear set, and possibly couple of other things. But don't hold your breath yet.