I have a Pantech Crossover and when I call landlines (at least German ones, haven't had a reason to test others yet), the Skype ringtone still is in the ear speaker, but as soon as it switches to the phone ringtone, it is on the external speaker.
Worse, I can only force it back to ear phone when somebody picks up, and only by toggling the speaker button twice since the first button press pretends to switch _to_ the external speaker.
I did not find any way to configure my preference to start all calls with the ear phone.
According to Android Market, there are no updates available as of time of writing, so I should have the newest version.
Thanks for taking care of this!