I have VFs and they work, it took a few days to adjust. I can cycle in mine but prefer to wear my old simple prescription lenses as you no longer have to rely on the "sweet spot". Mine came from Specsavers they are OK. It depends on your local branch as to how good they are. Get the 21 year old work experience kid straight out of college, oh dear. Get an opto who has been doing it 20 years, now you are talking. When I had mine done the 21 year old kid did it, the experience opto talked her through what she was doing with "OK, so what comes next? You have X and Y, what about..."
I lived with 2 pairs of glasses for a couple of years, it was a pain. I still use standard readers to my prescription when I am doing lots of close work or using a computer, the narrow sweet spot in VFs makes looking to left and right across a screen a chore because as you look sideways through the bottom of the lens you get distortion, straight lines become curved, and so on.
However the win was being able to do more than one thing. Driving a car and stopping to read a map was difficult, I was having to lift my specs up and peer round them to read the map. It was a real chore in factories - I'd be walking round with a clipboard, all gowned up in the gear, coat, hat, ear defenders, I'd need to make a note. Oh bugger, my reading glasses are in my shirt pocket (or better still on the desk!) so I'll fish them out, take off my others, balance them on my head while I wiggle the others under the hairnet and hat, then put the others back in my shirt pocket, then do up my overall, make notes, go back to looking round the factory, oh dear, can't see anything that's more than arm's length away, reverse process...you get the picture.