Now with the latest game upgrades you can make various sets of armor --- war armor, learning armor, etc., then use "second chance" to adjust your skill tree to that armor and its purpose AND, this is the awesome part, SAVE the entire configuration in the new Hero Sets feature.
So if you're wearing armor designed to boost your learning speed and you're suddenly attacked you can switch to your war armor and its accompanying skill tree with the click of a button. This is just so bad ass! I love it!
I'd like to start talking about the armor, hero sets and the skill trees more in the coming weeks. For now here's a video on the two hero sets that I've put together!