If you couldn't catch your finger nail in the scratches, then you should be ok...
Also, as long as the scratches did not make any metal proud (higher than the metal surrounding it), you should be ok... (If the scratches went below the surface and not above it and not too deep, you should be ok...)
The worst that can happen is you can get some blow by...
I would do a compression check, and/or a leak down test to see if it is affecting the sealing of the rings at all if you want a piece of mind without tearing the engine down again...
If anything, as the cylinder wears, it should make the scratches smaller and less affect on performance...
Keep in mind that combustion is pretty instantaneous and there is very little time for the small scratches to leak unless they are too deep, and if they are you should have been able to catch your finger nail on them when running it across the scratch.... Run the finger nail perpendicular (90°) to the scratch to check...
We used the finger nail test at the engine factory to tell if we could run with the issue or not on cranks, head surfaces, cylinders, etc....