Where it gets tricky is there are methods that are faster and easier for the climber, and methods that are faster and easier for the crew, and lastly methods that are faster and easier (efficient) for the entire job. A good climber, or contract climber, will do the last option...but I've seen a lot of contract climbers on social that do the first. Especially when they have no real long term experience working as an employee with a set crew. Bigger is not always better.
As a example, if I put a certain amount of time on the job (day) for a tree to be rigged out, to minimize damage and potential risk, and a contract climber comes in a flops the entire tree or rigs huge stuff and over whelms the ground guys...leaves by lunch or before and charges me for the whole day rate. I won't be happy for multiple reasons and would not hire him again. I probably wouldn't hire him again even if he didn't charge full day rate, unless we had a serious talk about how my jobs will be done.
Now if the job is done correctly and due to speed and efficiency it gets done early, I have no problem with paying full day.