59:T418,

This addon will associate your gear to each role and switch it accordingly.

That is if you change your role,

it will save the currently equipped items to your previous role.
it will load the equip set that you have worn the last time you've been in this role.

For example let's say you are a warrior and have a 2h DPS spec and a Sword/Shield tank spec. Now with this addon if you switch to your DPS role, you will automatically equip your 2h weapon, and if you switch to your tank role you will automatically equip your sword and shield.

Known issues:

Currently places unequipped items into the last bag instead of their previous location.
Switch items in place on your character will fail (e.g. main-hand/off-hand becomes off-hand/main-hand).

Please note that Autwofit is currently under frequent development (read: I use it for myself ;)), so please have a look at this page should you encounter any issues, there might already be an update available.

5a:T459,The MIT License Copyright (c) <year> <copyright holders> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.