That could help, but if he's just reving it up on the spot there should be hardly any blowby (crankcase pressure) what so ever really... Its when you put load on the engine it starts causing problems normally.
There are many types of breathers by many makers/companies. You need to decide if you want to recycle the oil vapors back into your engine oil or not. I have elected to not recycle my oil vapor/sludge back into the engine; I need to empty my catch can out periodically...but its a track car. You can recycle the sludge back into your engine if you like or not...personal preference.
Here is a good example from Z10: Note the 2 -10AN fittings, good for breathing. [$170 USD]