vintage,
Years ago I "drove" a friend's hack for about an hour. After I got off the thing I told myself that I'd probably never own one since I found it too compromising in the handling department. Hacks want to do almost the opposite of what you have experienced riding on two wheels.
Maybe I just didn't spend enough time on it to feel comfortable, but when I got back on my bike I was thankful that I could lean into turns again.
Dwight