Good call. My commuter 1x7 is fine without anything (well, it has a bashguard, but that happened to be on the crankset already), but the N-Gear on my 1x9 monutain bike is a lifesaver. No issues with that and a bashguard on the outside (this is riding nasty singletrack, not like commuting on my 80mm travel 29er with 2.5" tires. People do stupid things). The N-Gear is a perfect, simple fix for an irritating problem. Don't be put off by the Geocities-esque site, the thing is legit.