Some. Depends where you're at I guess. Regardless, I think most people can wait until they get to a PC or use a web version instead of app if they're in that much of a hurry.

If you still use banking apps stop calling yourself a BTC maxi. I recommend everybody to walk the talk. Start with getting rid of credit and debit cards. That alone will make you a force for adoption and it'll stop you all becoming hypocrites.

Some of them. If it's a must to have them on your phone - create new Profile, install sandboxed Play Store and Play Services, create & login with some nym g-account and install the banking app.