Working from distant memory, the most diplomatic way I can put it is the elaborate "Comanche" ceremonies and customs described in detail by Lee are NOT supported by any other sources, contemporary or otherwise.

The gist seems to be that the book is a load of humbug.

Birdwatcher

"...if the gentlemen of Virginia shall send us a dozen of their sons, we would take great care in their education, instruct them in all we know, and make men of them." Canasatego 1744