I prefer not to contaminate my intake charge with oil vapors, or have oil residue building up in the intake runners or the backs of my intake valves.

IMO, the negatives outweigh the positives.
If you feel you "must" run one, I'd plumb an oil separator/catch can into the line.

The cranking compression test is more about getting more info to have a better idea about how much trouble it'll be getting any drivability issues sorted out.
The lower the cranking pressure, the harder it will be to make happy.