If you have a glance at my previous post, you'll note that there are no wrinkles or fluffs or any other derangements at my waist. That's because I tuck, then run my hands horizontally outward from my navel, pulling excess material to the back, above my butt. Some day, when I win the lottery, I'll get my shirts made-to-measure, and I won't have to do this anymore. Meanwhile, I'd rather have a very bunched back which few people see than a moderately rumpled front which everyone sees.
At any rate, it's another detail to keep in mind when you're dressing yourself. But especially if you'll be wearing a jacket, what do you have to lose?
Now, go to bed. We have work in the morning.