A digital input is much more realistic, one of the first things done when building a rally car is getting rid of the cable handbrake and replacing it with a hydraulic unit. For all intents and purposes, this makes it an on/off switch. Basically when you pull the handbrake in a real rally car it absolutely needs to lock the rear wheels in all scenarios, anything else is unacceptable.
That being said, lots of sim racers run analog handbrakes, but I would argue any situation you would need to drag on the brakes is better suited for left foot braking.
I put it away until clubs come in to avoid coming into clubs with the burnout I had after running DR events for two years. I want to be excited to run rally championships, and a break has gotten me back there.
I gave up on the FPS genre years ago, but DOOM made me realize that I didn't grow out of loving FPSs, it's that the modern FPSs just aren't very good in comparison hah. Easily my favorite FPS since like Unreal. Definitely worth the $15, fantastic game.