I'm of two minds with this. On the one hand, I recognize that the standard rule is buttoning the top button and leaving the bottom button unbuttoned on a 2-button blazer. With these new-fangled ones with stupid-high button stances, though, I'm not so sure. Maybe an MC cross-over can speak more intelligently to this, because I know I can't, but I've always thought that the ideal buttoning point was at the narrowest point in the torso for a traditionally flattering fit. If you look at where that falls, though, it's directly between the two buttons: Warning: Spoiler! (Click to show)
I feel like every blazer I've tried on in the past five years has had the top button hit somewhere in the vicinity of my xiphoid process.
Part of the issue is that I'm looking for a blazer I can be wadded up into a little ball, stuffed into a messenger bag, and come back out looking relatively suitable for a biz-caz office environment. The other issue is that jackets with squared and/or structured shoulders usually look kinda off on me. My shoulders aren't that broad, and they're kinda sloped and rounded, and I usually end up with some weird half-pagoda effect going on with my left shoulder.
So...not really sure where I was going with that, and probably too tired at this point to put a coherent thought together. Needs work, but I'm not sure where to go with it.
sorry to intrude the present convo.
notwithit, though porker did a better job of answering your question than i ever could, and he out MCs me flat out, i though id jump in anyways with a very slightly different opinion.
while parker clearly is right about the history of the jacket meant to be buttoned fully, and he provided very adequate photographic proof, and if one wanted to button their jacket that way they would have more than enough with which to back themselves up, still, i am yet to see a single MC fit that was fully buttoned up. maybe i missed it, but that kind of thiing would almost definitely cause a brouhaha of note.
i think the most likely MC answer to the question, or at least the one you may hear the most, would be not to buy a jacket with that kind of stance if you want to button it at all. certainly parker has a broader view than most, evidenced by his successful MC/SWD crossover, and he is the exact type of guy to be able to see the positive in the fully buttoned up jacket, i imagine most on the MC side would say to stay away from it and find a jacket with a stance that looks proper with the bottom button undone.
now, maybe the SWD view of such a jacket would be to fully button it, and that is fine. maybe right now a lot of street-wear inspired jackets out there are intentionally being made with this type of stance, with the intent that they be worn full buttoned. but for me, i think id stay away if you are trying to get an MC look out of a jacket. just find a jacket with a stance made for leaving the bottom button undone, there are plenty out there.
as to your second question, you may want to try the belvest jacket in a box.