Those are good questions, and kinda difficult to answer, because it depends on A LOT of variables!
I prefer my saddle gear over my climber (I have a Treewalker) in most situations:
-safer, since you are always connected to the tree
-much lighter & easier to carry thru the woods
-almost no restrictions on what type of tree can be climbed (leaning trees, trees with branches, big "twin trunk" trees, etc.)
-learning about different climbing methods, knots, ropes, mechanical devices & gadgets has been extremely interesting for me
As far as if it's easier to shoot from a saddle vs hang-on, if the hang on stand is placed exactly where you want it, and you're set up to shoot at the primary area that you think the deer will come from, (and the deer actually comes from that direction,
) then I would say that it's just as easy, but initially it would be harder until you get used to having your tether in front of you and learning what your personal preference for tether height on the tree is. If the deer comes from an unexpected direction, I believe that I have more options to take a shot if I'm in a saddle.
As with everything new, there's a learning curve, but
for me, I found that the learning curve for shooting from a platform stand was shorter than shooting from a saddle.