I am also a big fan of Chrome and use it 98% of the time but Firefox with iCrewMax is great for accessing iCrew from your PC. (which is about all I do with it)

In any event I think that as of the last update to iCrewMax for Android you no longer need to have FireFox on your PC to access your schedule data through your Android.

-vpr

note:
since i do have it installed on my pc and have not tried deleting it and then accessing the Android software, it's possible that it is required to have the pc software installed on your pc version of firefox for everything to work.

for the first few versions of iCrew mobile you did have to log on to iCrewMax for PC in order to download your schedule to the phone but this has been done away with.