I went to CABDA with a friend the year the E2 was introduced, and I got to test ride one. Handling was, let's say, unique. With the vertical head tube and negative fork rake, it did not behave like a normal bike, or even a normal 'bent. I could barely ride it, but it took all my concentration. I suspect if I'd had to make any avoidance maneuvers I'd have gone down. My friend could barely ride it solo, but had no chance with me on the back. At the time, I made the observation that lawsuits over the bike would break the company. 'Luckily' they went out of business before that happened.
My recommendation is to stay far away from the E2. The BikeE handles very well, but its big brother E2 does not.