Originally Posted by marcodalondra
Uuuuuu you went again from suggestion seeker to super expert and veteran black tie eventer in few months, impressive.
Aside of sarcasm, you did not understand my point. The jacket needs to be shaped with or without vents, this was not even in question, and when standing still the vents should therefore look closed. Bespoke jacket for rounder bottom while have the skirt/vents shaped accordingly.
The problem you have is with movement and sitting down when an unvented jacket back will ride up/ wrinkle, whilst the vented version will be able to fall flatter.
Actually, if you look back, I asked for few, if any, suggestions for my tuxedo. I knew exactly what I wanted from the beginning, with the exception that my research led me to a Marcella shirt, when I would otherwise have had a plain front. Second, this debate is about jackets, and is not specific to dinner jackets. Do you think no one else on the forum is experienced at sitting down in a jacket? The double vented jacket only falls noticeably straighter on something like a piano bench, where there is a surface to either side, but not at the back. On a stool, it falls on all sides. In a chair, either type will bunch against the chairs back. In a pew, everything gets messed up.
As to movement, I find the advantage of vents minimal when the jacket fits well. If I am moving around a great deal (swing dancing, for example) I need the jacket open anyway, and then the point is moot. And, I am an ice hockey player; I am entirely familiar with the difficulties associated with a round bottom.
Of course, you completely ignored the fact that I agreed with you, from the beginning, that double vents are entirely acceptable. But, please, do dazzle us with your next condescending post.