yes, this rubs on me, too. I have noticed it.
A couple weeks ago I went to dinner with a large group of mromons, only about half of whom are active. We prayed before dinner, and the three Catholics of us there crossed ourselves as usual, while all of the mormons folded their arms across their bellies, while one man gave a lengthy seeemingly improvised freeform prayer, consisting of all the usual calling forth of blessings. it made me think, for a people that eschew formatted things, the arm folding and the prayer were terribly formatted.
why not just fold hands in the traditional sign of prayer? all they have done is adopt a different sign, i think deliberately and even selfconcisouly different.
so now whenever i hear people say Heavenly Father, and fold their arms across their bellies when they pray, I know thay are mormonas, so I guess the brand identification has succeeded.