We did some serious testing on some patched apk's (thanks again, Sally), but still there are chances that I missed some special cases, as byte patching is different in many ways to patching smali code.
Just try to patch your app and report back if it doesn't work. I'll will then look into it. As Sally stated correctly, this will not make any apps run that didn't work after patching with GMAPS Patcher, especially if it requires to login to Google+ or similar.
Google Chrome doesn't have to be patched, it works just great on OS 10.3. Google Maps also must not be patched. It works out of the box.