Good deal!
When you replace your Rubies visor, carefully cut out the visor area (it may help to heat the helmet with a hair dryer first) and then make a paper template held inside the helmet to see how to cut the welding visor to the correct shape.
Once you have determined the shape, you can cut that RJ Safety visor with a good pair of scissors.
Something I learned while cutting my first visor: put masking tape over the outside and inside of the welding visor before you cut it, just in case the scissors slip! I'm glad I ordered myself a spare, cuz I scratched the first one pretty good. :facepalm