I have the 7plus and I also took a few days to get used to the new button, but now much prefer it. I was disappointed when my 10.5 didn't have the same one. I feel the 'fake' button is much stronger and won't break. I also love the feeling when you scroll through things like the time when you're setting your alarm, as it feels almost clockwork. I'm a big fan of matching analogue and digital and that's why I'm in 7th heaven being able to use the pencil on my iPad as it's the best of both worlds for me.
A long answer, sorry. But basically Op, don't let the initial 'it's alive and freaky' feeling of the home button put you off upgrading, you probably will get used to it and grow to love it.