Yep, I read somewhere (pretty sure bonsai4me.com) that the only place they're seen in Europe is in church yards, because that's the only place they could effectively fence off from livestock.
I probably have an entire 14" of trunk space that is covered with emerging buds every two weeks.
Meaning that I have to clean it off every two weeks.
However, I'm in AZ, which means it's still in the 80's right now in the day time, and about 48-50 at night. I'm sure that mirrors some people's summertime conditions.
Can't tell you how they respond to wiring. Mine has been sitting with wire on the trunk since the beginning of September when growth took off after the oppressive heat began to subside. Hasn't bitten in yet, and I haven't checked to see if the trunk is holding shape on it's own. I'll be waiting until there is a little swelling of the trunk around the wire.