Questions like this can usually be answered at http://gunengraving.org/engravablity.shtml Your gun is not listed. It must be an import. You need to find a place that will be covered up, such as under the grips and try a test cut.
I'm not experienced enough for the correct feedback I'll get from a test cut in the slide. These pistols are hardened first, then machined to prevent warping. I will say that I'm a machinist and these guns are machined beautifully. What I did do was contact the importer and asked if I could buy a defective slide or part of a slide but they never got back. Typical new generation Americans, don't care. I try calling them, we'll see what happens.