I've been messing with Galangal for many years. I guess I bought it from the same vendor you all are referencing with the claims of Crowley loving it, and Himalayan shaman using it with Alpine Turmeric (which I also bought).
I have never found it to be overly psychoactive, but it does have some effects. I think it is probably quite healthy (as is turmeric) though. I use it to flavor food, and find that it does have ginger like effects... only somewhat more pronounced. It it certainly hotter and spicier.
Come to think of it, I did try smoking it a few times. (ground into a powder) It did have some effects, but none that I was overly impressed with. It was interesting enough to imagine that some people might find it to be a more clear headed substitute for other smoking substances.
I guess that it would make a decent admixture herb. I never payed attention to its anti-emetic or counter nausea effects, but considering how well ginger works for that... I would not be surprised if it turns out to be a valuable ally in this respect. I never noticed anything special about the combination with turmeric, but as others have mentioned that vendor has made claims I couldn't back up later a number of times. I think they promoted the use of Holy Basil Seeds (Tulsi) with Patchouli or something like that.
Who knows? Maybe these things just need higher doses to really shine? Maybe there is a magic combination that would be ideal shaman's smoke... Though having tried a ton of such herbs and admixtures (alone and in various combinations) I won't be holding my breath. The best I can say is that some of them make a great bouquet bed to lay changa.
If you discover anything, let us know.
"Curiouser and curiouser..." ~ Alice
"Do not believe in anything simply because you have heard it. Do not believe in anything simply because it is spoken and rumored by many. Do not believe in anything simply because it is found written in your religious books. Do not believe in anything merely on the authority of your teachers and elders. Do not believe in traditions because they have been handed down for many generations. But after observation and analysis, when you find that anything agrees with reason and is conducive to the good and benefit of one and all, then accept it and live up to it." ~ Buddha