QUOTE
The only thing about the SY is that in order to use it, you need to have a fair amount of experience with magick, the tree and the paths. The SY assumes that you have walked all of the paths, have a working knowledge of the energies associated with them and then moves on to show you how to use them
Considering that the SY was written long before the advent of Western Theurgy, the above point is unfounded. The works of the (pre-Western) Kabbalists assume knowledge and practice of Jewish law, ritual, and scripture. This holds true for Kabbalah Iyunith (Contemplatice Kabbalah) and Kabbalah Ma'asith (Practical Kabbalah). You will find more on the names of God and their meanings (as used within the SY) in the Talmud than you will anywhere else.
This is not to say that Western theurgists cannot use the SY for magical purposes or that they cannot interpret it in a magical light. I merely wished to correct a tiny bit of misinformation.