Yes, of course. For one, you'll never clean out a compression cut in one pass fully - well maybe if you had the best dust collector ever made. With any Dust Boot, if the brush isn’t touching the work surface you’ll lose a drastic amount of suction and you’ll have chips spray out.
The key is to optimize your tool length (choke up) and Dust Boot capability like an optimal brush length for the job. We do plan to offer different options for spacers and brush lengths for our Dust Boot - this is not yet available.
We designed our Dust Boot to provide the most airflow CFM as close to the spindle while having as long a brush that makes sense. It’s not perfect, but it’s an improvement.