In IIH vol.2 Franz Bardon writes widely and deeply about evocation in a very classic framework (circle, triangle, magical weapons) in order to evoke the entities but in one of the last chapters of the book he talks about a simple mental travel technique for what it seems to be the same purpose.
I have experience with contacting spirits and build relationship with them, but never approached them by means of "solomonic" magick. So, with my background, it would be natural for me working with FB spirits through mental travel. However, I guess that Bardon wouldn't have written so widely about evocation if the two methods would be interchangeable or would lead to the same result.
What's your point about that?
Thanks in advance.