Good Evening -- it's late in Paris... maybe... 22:30?
1. Yes... I most often shoot vertical/portrait frames for panos and I especially like "tele-panos" -- zooming-in for extra detail, and then stitching. Kind of a weird obsession, but with the nice cameras and lenses we have, I think it is cool to bring out the details. I tend to make this more of a technical exercise rather then leaning toward the creative side. But I strive for a clean result with no seams and straight verticals, etc. Mostly handheld, but sometime use a tripod. I'm a weirdo, I'll admit it. In this case, I was using the Nikkor 60mm "micro" and there was plenty of headroom, so landscape worked fine... otherwise it would have been twice as many frames and I probably would have had to crop out a lot of sky and foreground.
2. This is a long story. The short answer is... "John-Erik" -- but since I was born in the USA, nobody could seem to "figure it out" (you know how little kids are... "What's your name again?") so instead of trying to explain it over and over, it just morphed into "John" for simplicity.