[Henry Schmidt]

We do it all the time. I learned the technique by following NASCAR engine builders who have been coating their cast iron blocks for decades.
I rarely run a Biral cylinder sans Nikasil coating.
The benefits are fiction reduction, precise sizing, variable RA factors, better ring options and incredibly durable.
With the AA 86mm cylinders that we've seen, they tend to be a few thousandths over bore (30-40 thou ring gaps on new cylinders) so the Nikasil coating can bring the cylinders back into spec.
It's also a cool way to save a Concours build. New Mahle cylinders are Aluminum so the look is different. Many times the original pistons are still in spec so reusing then in a new bore is cost effective. The key is to get the correct rings.
Keep in mind the Biral cylinders have less expansion so choosing the correct piston material is critical. 4032 (vs 1826) is a better choice. Check with AA to see what material JE is supplying for their application.