It's very easy to set up, I have it integrated in my Google Analytics so all of our users can benefit from this tool! No need anymore just using Chrome or Firefox is enough but if you want an extra layer over your browser then go ahead with Abbeys scanner because they make sure their product works perfectly regardless what platform we're working (mobile/desktop). Nothing really bad about abbey scan since most websites don't work when having these kind issues anyway which means no loss at least during testing period as long us know how it goes once its live :) try them out first before making decision otherwise i'm afraid there will be lot people complaining :/.