The cards are rather big, with a matte finish and well-rounded edges. The size is not really good for shuffling or riffling the deck, which is a bit of a pity as that means it will probably not make it into my standard decks. I tend to get annoyed with cards I cannot shuffle properly. The back shows a non-symmetrical human eye, so it's perhaps nothing for people who put a lot of weight on reading reversals.
The pip suits were superimposed on paintings and I'm not sure they always fit the meaning of the card but in most cases they do. The colours are muted except for some of the fundamental colours (red, blue, yellow) that appear a bit brighter, which gives the deck a bit of a serious and sombre quality.
The imagery is clearly influenced by Crowley's Thoth deck but not a Thoth clone or derivate, Haindl has developed imagery of his own using mythological images from various cultures, occult systems and religions (Norse, Hindu, Egyptian, Native American, I Ching, Runes, Alchemy....), which makes it a bit of a deck for the advanced reader. I find it hard to interpret the pips without any prior knowledge of tarot, the suits and the progression within the suits. So it's clearly not a deck I would recommend for total beginners. Haindl uses different names for some of the Majors (e.g. Transformation/Death, Alchemy/Temperance, Pan/Devil) and for the Courts (Mother/Queen, Father/King, Son/Prince and Daughter/Princess) and he follows Waite's numbering of the Majors (XI=Balance, VIII=Strength)
The imagery and style reminds me a bit of the Petersen deck. I think it's a bit of an acquired taste. Either you like it and it "talks" to you - or you don't and it doesn't. Personally I found it quite interesting to work with and got very clear and good results in my readings. I would have instant associations with most card images and the key words and references helped, too.
The LWB gives you very little to go on, there's a description of the card and a very short and somewhat limited explanation of its divinatory meaning. Again, I'd say that makes it an "advanced readers' deck".
There are a number of cards I like especially in the Majors, for example The Hermit, The Tower, Strength, The Lovers, Two of Cups, The High Priestess and the Magician. My least favourite card is perhaps the Queen of Wands depicted as Kali as it stresses only the dark side of this card (makes me wonder if Haindl is scared of strong women).
As I already said in the deck interview this deck somehow had an "old wise man" feel to it. It's a rather serious deck with a distinctly sombre quality. Not necessarily dark but perhaps a good deck for serious questions, meditation and shadow work. I quite liked it but it will probably not become one of my standard decks in use. I still have to test its use in creative writing and there was a spread suggested in the LWB I have yet to try. In any event, this one is a definite keeper. Beautiful artwork and rich symbolism. Perhaps not everyone's cup of tea...but mine.