Really impressed with this product for a couple of reasons.
Firstly, its the first thing I've seen from the producer and I was really impressed with the level of detail and the content from the get go.
It gives an excellent in game explanation of the various ways you can become an Eidolon and it pitches it perfectly with multiple paths within the class offering a range of play styles and options, whilst at the same time making you walk a tightrope between undeath and passing over to the spirit realm.
It includes a nice selection of Feats, a selection of spells and at 30 pages you can see that a lot of time and effort has been put into this to make it an enjoyable and interesting playable character class.
I've added @SpilledAleStudio to my watch list, I think maybe you owe it to yourself to do the same