I agree with Treeman, shoot it and enjoy it. I asked the same question when I bought an engraved Colt 1911. My indecision lasted until the next day (the soonest I could get to the range), then I put 500 rounds through it! Engraved guns shoot great! Enjoy that gun.
PS, one of my 'fun' things to do at gun shows is to browse the tables until spotting an engraved gun with all of the zip ties on it in four different directions. Then I would slide up to the table and ask the dealer 'How's it shoot?' The reaction was mixed from a shrug to an almost hysterical 'You can't shoot that, it's a collectable!' To which I would answer what good is a gun you can't shoot?