I have a young neighbor who comes over occasionally to play. He likes RHCP, John Mayer, Hendrix, etc. and I always stress to him how much easier it will be to play that stuff with the thumb-over F-shape chord. A few nights ago I heard Pearl Jam's Yellow Ledbetter (for the first time in a long time) and thought, oh, I should learn that. I sat and picked it out and was shocked at how simple it is- IF you know/ can use a thumb-over F-shape chord. I wish I had tried this song back when I was learning this style- it's a perfect lesson. Simple I-V-IV (corrected) in E- using a II-III hammer on over a root-5 barre, F-shape thumb-overs, and small fingers augmentations, and it is slow. It is quintessential Hendrix-style. I found a vid for those interested to show the method, but the guy doesn't explain much in the way of theory. It seems the perfect song to learn some of the Hendrix/Mayer style stuff. I turned my neighbor onto the song and he's steady working at it now. He picks things up quickly so I expect he'll master the song in a few weeks. Maybe it can help you too.