IMHO when you have it in the back of your mind that the Loctite alone may fail you can't keep a clear head while riding, at least I can't. And by the time you find, use, and replace self-locking nuts or Nylock nuts you could've just gotten a fresh set of factory locking tabs and be done with it.
When dealing with torque figures like that on small diameter nuts and bolts you must torque them in sequential steps. Do a criss-cross pattern like you would lug nuts on a vehicle and torque them to maybe 10 first all the way around, then 20 or more, then maybe try going a little more. I'm not sure if I tried actually hitting 44 on my own but it was just easier to buzz them on with the electric impact, in a pattern of course as previously mentioned, but I made sure to use the locking tabs. As I said earlier, this isn't an area you want to skimp or slack in. This is where the locking tabs would come into play IMO. And FWIW the Yamaha manual says 43, the Clymer manual says 44. Seldom can you gauge 1 ft.-lb. difference. I haven't found many, if any, contradictions between the two manuals personally but as with any publication I'm sure there's some there.
As for the case saver, most all of them are that way so I wouldn't see a problem using it. I've got the TM Designworks saver on mine and I'm certain it's the same design as yours, just a different material. Thing you gotta keep in mind though, if/when a chain breaks it WILL break stuff and there will be carnage. Just hope it's at the lowest speed/RPM possible if it does break.