Reddit reviews Warren Haynes - Guide to Slide Guitar

[Warren Haynes] (https://www.youtube.com/watch?v=QRO9JqlyGJ4) plays almost all of his slide work in Standard tuning. He also has a [book] (https://www.amazon.com/Warren-Haynes-Guide-Slide-Guitar/dp/1575605244/ref=sr_1_1?ie=UTF8&qid=1481343322&sr=8-1&keywords=warren+haynes+slide+guitar) that explains how and why he stays in standard.

If you are looking for something that helps slide playing in standard tuning, this is a good reference: Warren Haynes - Guide to Slide Guitar

I got this book in a store a while back, which has been helpful.

http://www.amazon.com/Warren-Haynes-Guide-Slide-Guitar/dp/1575605244