[Sator]

Some cutters think that single centre vents on a SB lounge coat is the more classical configuration, and side vents likewise for DB reefers. Some make outrageous claims to the superior this-that-and-otherness of the side vent, or whatever their personal subjective judgment says. Objectively, dual vents run cooller, ventless looks cleaner and dressier. Choose whatever makes you happy, and not what someone on the internet tells you.

 

[Sator]

On a well cut coat it should not matter if a lounge coat has centre, side or no vents. All configurations should be wearable on all body types. If not the coat is poorly cut, and the cut, rather than the vents are to blame.

 

[Sator]

Basically, when you buy bespoke, the sky is the limit as to what you can have.

True, you can bespeak a purple ventless dress coat or morning coat (these being both examples of tailcoats) with pink polka dots - if you really must. For that is the category of oddity that a tailcoat without a centre vent and inverted pleats in the back would belong in.