I just updated to the latest Skype version yesterday and came across the Home button annoyance. I downgraded back to my previous version via Time Machine since v5.5 doesn't seem to have any must-have features that I care about. In my case, the old version is 22.214.171.1243 and doesn't have a Home button.
And similarly for my iPad, I have avoided updating to Skype v3.6.1 because the only feature it said it is adding is banner ads. No thanks!