I bought few of that India repro in the past. Doesn´t looks good, but when they fit, they are good for shooting. Sharp and rough checkering together with a more fatt design fills my hand better.
Here in the CR is a Klinsky company, producing several designs of grips, also for Luger. I can not recommend that. No "mass" for fitting, too slim, practically you can be sure that without fitting you will crack it at the place where the safety lever is. But may be some of you will find nice grips for another of your gun...
http://www.klinsky.cz/