I used them in a few builds. The most recent was my first patio offset reverse flow build. It used 6. They are great! They never sqeak and if they do, I'm sure its nothing that veg oil wouldn't solve. They are brass pin'd and glide on a brass washer. I like them and I'm sure you will too. I'm not a fan of welding wooden door hinges to a rig. They may work but they just aren't made for that.
Remember, If you put the hinges in the same direction, you can lift your doors off. Not safe to do for your horizontal doors unless you rig up a latch of some sort to keep the door from falling off when in use.
Goodluck!
PS, i just got my first order of the proQ2 gauges from KCK and they kick the crap outta the old ones that were already awesome!