Though regulations state no hands in your pockets in uniform, what are your thoughts on those who hold their belt buckle or waistline?

If you want to walk around like Hank Hill or Al Bundy, you're the one risking the wrath of those above. To me, it's slovenly. A service person should present an image of constantly prepared and ready to respond at a moments notice to any situation. That precludes 'pocket pool' and trying to point out the fact that one has genitals. You're Soldiers in the US Army, Marines in the USMC, Sailors in the US Navy, Airmen in the US Air Force and members of the US Coast Guard. That, ladies & gentlemen is a position of pride and distinction these days. Those of us who served under the spit and disdain of our countrymen are more than pleased at the improvement in regard but I'm disappointed in the somewhat lackadaisical attitude towards appearance and presentation. Yes I'm an old fart who has got his ire up. My 'rant' is almost over. I will leave you with one final thought and as a lifetime favor I ask you to give it serious thought. "You're walking through an inner city area known for gang activity. The first group is lounging around, scratching their anatomy, hands shoved ito their pockets, not really paying attention. The second group is alert, observant, hands free of obstruction. Which group do you take seriously?"

Hands in pocket comes from a concept that the individual has nothing to do.
There is a story about J Edgar Hoover tearing into his agents for having hands in their pockets meaning they are listless bored and not focused.
It implies the same of soldiers. I was not ok with hands in pockets unless frostbite or stiffened digits was an issue(ie field environment in extreme cold)
A soldier with his hands in his pockets meant team leaders and my e3/e4 mafia needed to get that soldier moving on something.

It's so that you'll be able to grab your Weapon faster, and shoot your enemies in the face and eat their babies for breakfast.

This ain't Buford Pusser county from (Walking Tall ). Hands in Pockets and hands resting on your belt buckle, shows a lack of self discipline and Decourm.

If they have such an issue with pockets, dont put them on when designing and producing them.

Thumbs in belt loops was my go to

Although it seems like a needless and pointless regulation, over half the regulations in the Army are the same way. The only purpose they serve is discipline...which isn't so pointless when looked at that way. To me, hands in pockets or on belt loop are about the same. Still requires you to hike up your shirt to accomplish, which looks tacky. Other than that, only the discipline aspect actually has any meaning to me.

The reg keeps the military from looking like a bunch of frat boys hanging out and dressed the same.

Of course if your in combat your gonna use your freaking pockets...HELLO !!!....brain geniuses who question that rule. But in respect you dress in uniform to be uniformed and carry yourself in the proper manner and honor the uniform and your company etc...