Please use it Shawn, no matter how safe/strong you or the stand are.
Greg, I use an SOP harness, and had the prussic knot on the tether about a foot or so above my head. I always put the prussic knot on the side of the stand that my climbing sticks are on, with the hope that if I ever do fall I will end up near the sticks. When I stood up I heard a pop, the stand flipped out to the left and down I went. The tether did break away, and I ended up right next to my sticks. I do have a scrape on my side from hitting the tree, but am otherwise fine. I have heard and read of suspension trauma, and though I wasn't hanging long at all, I certainly felt the pressure in my legs. I do wonder what would have happened if I had fell off of the left side away from my sticks, and ended up with the stand in between me and the sticks. It certainly would have been much more difficult to get to the sticks.
I can tell you I won't be found in a treet without a harness on.
Tim, like you I have often thought the same things. I mean, I hunted on Thanksgiving with a close friend, in one of his stands, that has been in the tree for five years. I was certainly thinking that morning. Maybe tonight was a wakeup call for me, and hopefully all that read this. (same make and model as the one I was in tonight).
David