I have these progressive lenses too. I have -7 regarding short sight and + 1,75 for the reading zone.
I put them on 4 years ago and kept them on my nose. No problem. It is true that you can't see that well on the side zone, well you learn that in a day and will never notice again. The same with that zone in between. You just learn to go over it quickly. It never bothers me.
Just try! It is so much better than looking for your glasses all day long (and I know of whom I'm talking here- someone who has reading glasses, car driving glasses, piano glasses plus bifocals )