Not quite, it's much simpler than that.
Contact lenses virtually all the time, it's a slight under-correction and they are fine for everything except night time driving including reading and computer work. Legal for daytime driving and I don't need to wear reading glasses over my contacts which I would if they were full strength.
Driving glasses for night time over the contacts. Tiny minus prescription as a top-up, all the anti-glare coatings and a close-up section at the bottom to counteract the minus bit.
Full strength vari-focals for the odd day I can't / don't wear contacts. I keep an older pair of full strength distance glasses in the glove compartment for emergencies.
All very straightforward.
So what I was getting at is if you only need glasses for driving but do need reading correction as well as distance/glare you can get them a lot cheaper than full varifocals. Mine cost about £200 versus £600 for my main varifocals. The peripheral issue is only a problem when reversing, so bay parking but I have to do that pretty well every time I drive.
My whole lot does work out expensive but I do such a lot of driving it's worth it and my car is small and cheap to run so there's a saving there.