I remember developing web pages with the purpose of ensuring they would work in both, so Phoenix was my main driver, but whenever anything was “done” the real work started of also getting it to work in IE, it was always a monumental effort. Sites with buttons for “go here for pheonix/go here for ie” where common. My friends who worked in the windows ecosystem mostly saw Phoenix as some “crazy hipster trend” and didn’t have a care as to if anything they made worked in it or not.