Ok, I'm not sure anyone has actually addressed your question so here you go.
I have been shooting a handle for 5 years now and I would never switch back again,
Here's why
1. It's a natural rotation of your arm to turn while drawing and ending with the back or your hand(knuckles) toward your cheek. This makes it much smoother to draw a bow once you get used to it.
2. I'm sure you have heard the term "trigger slap"? With a trigger style wrist strap release it is way to easy to slap the trigger at the moment of truth. With a T handle it is almost impossible to jerk the trigger especially with a pressure sensitive style (clicker). I personally use the Boss X clicker style release and love it. It is pressure sensitive so you anchor, take a breath and slowly put pressure on it and it goes off.
3. Nothing on your wrist while hunting! That used to drive me bat shit crazy when I was hunting. With a handle, you just put in a secure pocket and attach it to your loop when you get set, and you never have to worry about dealing with a stupid wrist strap :grin:
I will tell you though, if you decide to try one give it 20- 30 shots to get used to it. It's a different motion that most guys aren't used to and may take some time to adjust. You may not see a huge difference in your back yard as far as grouping etc.., but you will notice it shooting 3D or paper. :way:
As far as "learning to shoot all over or having to change you anchor point. I didn't have to change anything when I switched, just had to get used to a new feel.