This is a good question. It reminds me of experiences I've had with this deck. I did heavy journaling with readings (Thoth only) for a couple years before I even heard of Thelema or understood much about Crowley. When I read those old journals now I'm surprised to see some of the Thelemic concepts take seed. I believe that's how I got to Thelema.
On the other hand it doesn't surprise me at all because I find Thelemic concepts very natural or universal. I don't think I would have gotten there with a RW deck. But one never knows.
I went through a period of time where all I could see was sex in the cards. Sometimes I all I can see is HGA. Somethings all I can see is meditation. These things happen in such cycles that I often know exactly what I am going to see, no matter what I pull. As if the deck saying, "just do it." And it doesn't give up either, at least not until I really get it.
That is not so fun when I just want to eat chocolate.
I think this is related to Will, for me anyway.
I suppose it depends on the individual. But you might want to have a look at Aeon418's signiture for another thought.
AW