This is extremely timely for me personally. While I haven't been able to snag an EVO yet, I am going through the same motions on a Form 1 in regards to a CSA VZ58 762 Pistol. Luckily(?) for me there are US parts available to play the 10 part game on my pistol.
A response to CZ from the BATF in the positive, along the lines of the ATF's "Nixon response letter" (regarding the import and SBR of a fully built an complete long rifle by shortening the barrel), would be a key decision for all complete import pistols. If CZ got the green light on this pistol for SBR it would set precedent for SBR of any semi-auto legal import pistol.
This is great.