Mine vent away from the engine and are baffled (sp) I get very little
oil on the engine and I don't have to worry about the
oil vapor knocking down the octane. they also make vacuum pumps for the problem you Webber guys have.
BTW: When I had a PCV plumbed through a 4150 I would build up enough pressure to push the dipstick up. I don't with just breathers. Go figure.