X2 with the torx and 1/4" wrench, just used some tape and foam to make things go a little more smoothly and comfortably.. It does take forever on the fronts this way. rear bolts come out easily though, just remove the bolt making the tip of the triangle (you'll see), close the door slightly, then go in from the holes in the hinge body from the front. You can do this on the fronts of the four doors as well you just need to pull the fenders first.
The first time I did this mod -to a '95- It took a long time as I did not have a dremil or the like to cut the bottom from the hinge body and retain the pin on the top so i used a hacksaw with a round blade so i could cut in a downward motion. And yes the passanger side pins hammer right out and right back in on the top side.
The second time I did theis mod it was to a '87 and the pins in the doors wete not like the 'nail' type on the '95, they were hollow roll pins, which I did not wish to retain. So after I removed the torx bolts with my newly acquired thin ratchet, I took a portable bandsaw and just cut the top off of the hinges, leaving the bottoms intact. Removed thim with a hammer, then flipped the passenger sides to the drivers sides and the drivers sides to the passenger sides. I went to the hardware store with one of the hinges and easily found a hardended pin that fit tightly into the hole, the diameter was large enough that I had to remove the bushing from the vehicle. The pin wad a D-type pin- as in it had a curved part that could be used to lock the pin in a position. I retained this locking feature, as the curved part does not interfere with the closing of the door.
Things I learned: All the wires have a connection behind the kick panel. There is a wire that goes to the door buzzer/light button, yes unplug it. I pulled out the bushings on the '95 and did not regret it. Start on the back door you use the least and finish with the front door you use the most. The hinges can be set at somewhat 'off' angles, allowing the doors to hold themselves open, this is probably not good for the hinges though. If you have removed your inner fender lining, mud and junk will be thrown at you from between the fender and main body, a section of poole noodle fills this gap nicely, any rolled foam rubber or even empty water bottles can be used in a pinch. On the back doors there is no need to trim the pins, but on the fronts you have to either trim the front pins or clearance the body with a hammer, unless you use store bought fully removable pins like mentioned above, then there is no need as long as you dont weld them in.
Remember some states require two rearward facing mirrors, and I strongly reccomend that unless you drive doorless everyday and get accostomed to manually looking and clearing you sides, that you get some sort of side mirrors. Trust me, I almost killed a guy on a motorcycle the other day. Thats not a good feeling.
As for TJ hinges, I think XJ doors are too heavy and XJ fenders are too whimpy for them to work with out some serious modification. This mehod really does work great, and as an added bonous you get to amaze all of your friends.