An instrument rating is only of use to get you home. You can't fly to a job on instruments. How do you regain visual? If the weather's that bad that you need to IF then it's probably going to be too bad to do the job when you get there. As for inadvertant, we fly sim IF every 3 months, just in case. Not ideal, but we don't need a fully fledged IR.
Your profile doesn't say whether you have NVG experience, but NVG's are the only way to fly at night when you're operating in amongst the high ground, trying to avoid bumping in to the lumpy bits. Can't see how NVGs would be a deficit in regards to flight safety.