I wouldn't recommend them except for a last resort. The problem with cutting a branch up high from the ground is that you cannot see where you are cutting. that cut must be made at the branch collar, without injuring the collar.
injure the collar or leave to much of a stub and you reduce the tree's ability to compartmentilize the wound.
plus, how are you going to make your proper 3-cut pruming cut? cut a large branch with one cut straight down and you will rip through the branch collar and down the trunk. this type of wound is difficult for a tree to compartmentilize and sure to degrade future timber value.
It's even trickier if you are removing a co-dom stem since the pruning cut needs to be made in relation to the branch bark ridge.
remember if you remove the branch from a ladder, tie the top of the ladder off before you make your cut, make the first cut as far as you safely can out the branch and have a second person pull the branch away from your ladder with a rope.