When you refer to "plain milling" are you talking about the "facing" command?
I'm going to assume you are, so I did some testing. I will admit that I seldom use this command, so some of this was new to me too.
I went through the options and tried a few things, but I can't get the cutter to start anywhere but where it wants to. It does ramp in at 10° which is better then plunging, but I think the user would be better served with control of the ramp angle and the start point. I'll contact Joakim and see if he can add this.