Comp roller lifters 828-16

Anyone running these? They say they have pressurized oil to the roller, but looking at all the pics I don't see how.
Also says not recommended for street use.

I'm trying to save a bit of money on my lifters and these have no waistband to potentially be a problem. Look good to me but the pics look like the bearing gets "splash" oil only. That would be a deal breaker.