Oh hell, I couldn't care less about their "mysticism".......what has always impressed me about the Knights Templar was their reknown for kicking serious Muslim ass.
These guys were shock troops / Special Forces of their day. Amazing warriors. The Muslim forces feared them; outright scared s**tless of them. They were every bit the equal or better of any force they ever met in combat, and they usually fought while vastly outnumbered.
Some here can take their catty little potshots, but you're talking about one of the best fighting forces in world history.
The debates on the speculative literature, esoterica, and other apocryphal legends certainly have their fair share of interest.