A lot of pipeline welders prefer a normally home made "pancake" hood. I do not know the why behind it but it is popular and unique.
A hood that is good for one guy isnt what the other guy likes or it doesnt work well for him.
Here is a picture of a Pipeliner with eyeliner wearing her custom hood.
Here is a store bought version:
Here is a picture of a hood style that I was given when my welder retired. It is used when there is no room for anything larger than your head to fit into a tight spot. Talk about hot!
Pipeline welders are IMHO some of the best welders out there. They have to run all position x-ray quality welds. If they "bust" a given number of x-rays, they are told to load their truck up and go home.
A couple of welders at the shop where I worked as a pipefitter were just incredible.
They could run SS wire X-ray field welds and get 100% time after time after time.
Who ever said it can't be done is wrong.
Just takes talent and experiance and a darn good pipefitter making up the joint for them