yeah I could do it with no problem using just a cold knife then use my longknife to skin it down and use a caulking gun to apply glue. I prefer to use my express tool, cold knife, long knife, electric glue gun, cups, primers and good hv high modulus non-conductive 1 hour safe drive glue. an untrained person with a cold knife or even cutout wire runs a very high risk of breaking glass everywhere or damaging the car, as the op found out. I have done glass work for 10 years and have never once used cutout wire or especially guitar wire, there are way way easier and safer methods.
I wish I was in cali though instead of va. how is the glass industry out there? mandatory yearly car inspections keep the windshield business alive here.