I have nothing against any method a guy "aims" his trad bow, so do whatever works best for you. This is similar to the discussion on arrows...The "accepted" way may not be the right way for you.
Here's my thoughts on it for me, my way that works for me.
When hunting from a tree, I think canting the bow is not the most effective style. With a cant, the area needed for bow limb clearance of tree trunk, etc is greater. With a cant, you have a higher chance of limb tips hitting the tree trunk when you have to shoot towards the back side of the tree. But if you cannot shoot accurately with a vertical bow, then you have to live with a cant.
Maybe it took me a million arrows to ingrain it in my brain, but I do now shoot instinctive. Once I start my draw, I'm not consciously looking at the arrow. I raise the bow and point it toward the target and then draw (split finger), hit my corner of my mouth with my middle finger and release. I continue "aiming" thru the entire draw process. I don't draw, then aim...I'm actually aiming before I even begin the draw and I continue holding on target all the way thru the time of release. I get everything "locked in" with my bow arm and head before I begin my draw. I've found that if I plant my chin on my shoulder, my head stays in a consistent position relative to the bow and my bow arm. It helps me to be in the exact same head/eye/bow arm position with every shot. For me, planting my chin on my shoulder has made a big difference in my consistency of my form. Some days when I just don't seem to be shooting well, I realize that I'm lifting my head in order to "meet" the drawing hand. That screws me up. Bring the draw hand to the anchor, keeping the head in a stationary position. Turning, tilting, or adjusting the head during the draw makes too many inconsistencies for me. Plus, the distance from my bow hand to my anchor point is always exactly the same from shot to shot when I plant my chin on my shoulder. A "floating" head creates inconsistent draw length and also creates variation in bow torque.
I shot 3 under many years ago when I was trying to learn. I'm not sure if it was how the bow was tillered, or poor tuning, but I never was happy with my arrow flight. But since I'm shooting instinctive now and not looking at the arrow during the draw process, then there is not really any good reason to have the arrow closer to my eye.
I really dislike a swing draw. I want my bow up and pointed toward the target before I start to draw. It allows me to know my limb tips have clearance. Flexing the limbs before you are on target does not assure me that my tips won't hit an obstruction as they come forward during the shot. It's happened to me.
Plus, a swing draw creates more movement at the moment of truth. A "static" draw takes only the movement of my draw arm. Less chance of being busted.