And minus the right shirt... Techs are wearing jumpsuits ala AT-ST Drivers, just a different color and over their boots... Actually in ROTJ they wear their pants tucked in the boots for some reason, but that's neither here nor there.
The RFT has a shirt on, and separate baggy cargo pants with big pockets (seemingly loaded with gear). The shirt has flap over the front and buttons up with a large collar very similar to Solo's shirts, but buttoned up. I don't really find these uniforms a thing alike. The helmet I think is throwing you guys off that say they're "similar". They're not... A jumpsuit is not cargo pants and one of those freaky Han Solo shirts, ya know? It just isn't accurate.
The helmet in the picture may not have the neck extension. I honestly can't tell... It doesn't have the visor, or it doesn't have it painted. That's "accurate" to a degree... Most techs didn't have all the junk added to the helmet that RFT's did, except the squawk box on the left side. They mostly (I think some may have had them) lacked visors and neck extensions/protection. I'm not positive if they did or didn't have sidearms... I'm not against that, as they're ultimately military as well, but I don't recall them having the holsters. Some maybe did... There is some "mixing" going on with gear and some techs did have visors on their helmets as I recall, but very few.
I hope we don't get screwed out of this figure for the set... It's perfect looking to me as it is. If they did a second set, like a variant, I'd much prefer getting either a repainted pilot (2 pilots essentially) in place of the Tech or getting a Yavin Honor Guard wearing a tan hat to make one of the lower ranking officers.