Well for what it's worth I just finished cutting out the visor in my Rubies Jango Deluxe (a.k.a. my first Bu'cye) and personally I did it with an exacto and a craft knife..honestly I didn't trust my hand to be steady enough to use the dremel...cmae out excellently though!
Problem is its made out of a Resin material so I don't think the exacto knife will cut it. I think I will have to venture into the dremmel territory.
LOL! You'll be just fine!
Thanks!