There are at least two modelers that I know of in the PNW with vinyl cutting machines, and I suspect there are much more. Ask around.
One of the recent times that this discussion came up it was mentioned that the vinyl mask material can be had with various adhesive strengths. You want to get one that has mild adhesion, so it won't pull up paint.
And, if you want to hand-cut, I second the choice of friskit paper. It's great stuff.
If paint is applied properly, no masking material should lift the paint.
The mask material can be heated a tad to aid in easier removal.
Frisket is OK, but isn't as pliable as masking material.
This painting was accomplished with frisket and airbrush only. No brushes were used. Only painting I ever did with an airbrush.
I provided the masks which were used on these customer's models. You've seen the Avenger. Masks were used for the British flag only. Yes, it's pink.
Masking materials, includng "spray masking" liquids and "brush masking" liquids, have been around for a long long time. Nothing difficult about using them and it's quite easy to cut your own, with or without a cutter.
Derek's work is a tribute. Outstanding! A modeler doing his own art and graphics.
For the amateur, the secret lies at your local sign shop.
Charles