Tree suit is awesome, I have a whole shed full of great tree stands that I dont use anymore. by the way, anyone need a treestand? :D but you have to get used to it.
Here is a little list of pros&cons:
pros:
superlight
almost no metal to clank
cant fall out of the tree
GREAT cover (low profile silhouette)
comfortable for an all day sit.
wear it to the tree
you can stand up for L-o-o-ng periods of time because a portion of your body weight is supported.
I can easily sleep in mine, oh wait thats bad!
cons:
1)A great deal more thought has to be put into your setup because since your facing the tree, It is hard to switch the bow from one side of the tree to the other. I am right handed,, keep the bow on the left side of the tree, so the right side is tough to shoot on (for me anyway)
2)getting up the tree (not really a con) but it does make you have to think. climbing sticks are the easiest by far. I love em, but even my lone wolfs get heavy,clank and I have damaged a couple of bows by banging them en route . My hunting buddy and I use the same system for getting up when tree sticks arent an option, (i.e. very long walks in or having to go through thick brush)
we use a webbing ladder-aider from "metolius" (they make rock climbing equipment) and strap on ameristeps with two steps or more per strap. I have noticed that any more than 2 steps can cause a little slippage because there is more step against the tree than strap. Actually kind of got the idea from the buddies because they hand made rope ladders using square alum. tubing for the rungs. great system, too clanky for me.
those are the only two CONS I can think of.
here is a little pic of the rope ladder system, just reach up as high as you can hang a step and then hang the ladder on it. climb on up. Tree suits also make great climbing belts so I have it around the tree the whole way up. Once your up to the step, stand on it, hang another step as high as you can, reach dow and detach the ladder and hang it again, repeat if necessary if you have enough steps.
I forgot to mention that my buddy uses two ladders so he doesnt have to reach down and unattach it. I have never had any problems doing it though, but I guess you could drop it. UH-OH!
With the this setup there is a little bit more physical labor involved in getting up the tree, but a lot less while youre carrying it in.
tip:
I wear the extra steps bandolier style on the way up. I thought of one detail about the rope ladder.
thought of later:
If you have really big feet and wear boots with big hiking soles it makes it tough to get your feet into the rungs. I hunt mostly out of rubber boots and they fit good.