Currently I am using gortex, uninsulated Browning hunting boots... I got them for a steal, and they have turned out to be great boots.
I often walk some long distances (over steep and rugged terrain), and insulated boots simply cook my feet during spring hunting/walking. Rubber boots are tough to walk in (especially over rugged/steep terrain), and they absolutely cook my feet.
Either I can wear gators, or tuck my pants in to the top of my boots and socks (before tightening the laces). I am wearing thin army fatigue pants.
Most of the ticks I have gotten have been on my neck... I figure that is from sitting on the ground in taller grass or near brush. I have never had a tick get on my legs or lower torso while turkey hunting with any kind of hunting boots or shoes.
I would be curious as to how many hunters have gotten ticks on their legs or lower torso while turkey hunting (with long pants on).
Now, I will say, that if you are hunting a public area, and take off your pants near other hunters, and head out into the woods with no pants of any kind on, the other hunters will probably head in a different direction and leave you alone... Could be a risk worth taking???