Clarification detail...
The RV-14 kit uses some RV-10 parts. Primarily the wing ribs, flap and aileron ribs, and a few parts in the empenage.
The P.P. holes in these specific parts will be slightly under sized and have to be final drilled. It is a rather small percentage of the holes in the entire airplane (I'd say less than 5%). The construction manual tells you which holes to final drill.
I think the "buzz" on the 14 was that with the new modern cnc punching process, that most holes needed very little deburring. Sometimes its none, sometimes its just one side, sometimes its both because of drilling. Maybe that is what you are thinking of?
But make no mistake, there is match drilling and/or final drilling in the process.
If I were to guess on the wings, 80% final drilling (which is just a reamer) and 20% match drilling.
Bottom line; run your finger across the hole. If it feels at all rough, it needs to be deburred!