Rick, if you draw air out of the engine, it has to come from somewhere. Given that, you need to provide a vent for the air to come from, this is the breather.
There is another solution, breath from the air cleaner. If you put a pipe in the base of the airfilter, on the insidewhere the air has already passed through the filter, you can draw air all day long and it will not have debris, particles or
oil in it.
This system was used for several years in cars until a seperate breather was install on the outside of the filter element.
If you want to put in a air cleaner pipe, drop me a mail and I'll send you one I have and not used.
Let me know.