Yep, I have heard of many people running sr16's straight up and n1's straight up on a de/ve hybrid setup without contact. And yes the contact was only on the intake side and had the cams been straight up there would have been no contact, guranteed as it was that light of contact.
So who knows. The thing you have to worry about on stock 2.0 cams on stock springs and retainers is float. Simple as that which will happen before 8k.
SR16's and N1's are both very smooth ramping cams compared to the stock ve cams