I wish they'd done it the other way around -- ditched the jackets and kept the turtlenecks. The TWOK uniforms are ludicrous as everyday duty uniforms, far too fancy and cumbersome. I could buy them as dress uniforms, but it would've made more sense if for everyday use they'd gone without the jackets and just worn the turtlenecks, like the pilot uniforms.
Yeah, they weren't all that practical. They looked nice but it's probably not to user friendly, plus I imagine it's hot in a turtleneck and a jacket. I guess that's why the security and engineering officers/crew wore something different. Though I have difficulty imagining Scotty crawling inside the engine in that white suit they had them wear (which in TWOK's defense was a holdover from TMP--as well as the security uniforms).
Actually to be honest for all the flak TMP uniforms get, they were much more practical for day to day duties on a starship. I think had they just changed the uniform pants to black, those uniforms may not have looked as bad.