I did the same exact repair on y 95 D1 just about a year ago, and it was remarkably uncomplicated. It was actually easier than when I replaced the rear brakes and rotors with a D110 set-up. (That's a lot of bolts!) Like you, I had read about cutting the seal and cheating it on, but I decided to go the full route instead. No regrets.
The 3 part video series you reference was really helpful, though it did leave a few things to figure out along the way. The most surprising thing was ALL the bolts came out surprisingly easy for a 24 year old truck. Since my swivel balls had some corrosion, both sides were leaking significantly - the passenger side especially. Since I needed to sand, epoxy, and resand the chrome, my buddy and I disassembled everything on a Friday night. We cleaned the chrome, prepped it, then used some JB Weld to smooth out the pitting. Dried it overnight and sanded it the next day, full of optimism.
Installation was the reverse of removal except we did find that maybe the ABS sensor cable (if I recall) was a bit mangled looking. At first, we thought maybe we messed up, but we rolled the dice and reassembled as best as possible. Filled up both sides with One Shot, rolled out the door, and it drove with no codes or other issues showing up. Either that cable was okay, or whatever it operates/senses doesn't work any more and my Disco doesn't know any better.
A year later, everything is still running well. The driver side hasn't leaked a bit, but the passenger side with the bad pitting seeps a bit now. Not as bad as before but it's definitely leaky. The swivels still work nice and smooth, and all the guts still seem to be in good shape.
And now for the ugly secret: my swivels were leaking so long (and I was putting off the repair for probably two years), that I started using Tractor Supply Super S Cotton Grease #00 as a replacement. It's the right grade, but it isn't EP rated. I figured as much as it's leaking out, constant replacing it will keep the grease from failing. I had read about it on another rover forum, so I figured "Why not?" At $5/qt, it's hard not to try. Is it an entry grease to more nefarious greases? Maybe, but so far, so good.
The bottom line is that it's not a hard job. If you're only swapping out the seals, it's a long morning and you're back on the road. For the price of the seals, it's totally worth it, and you figure out more about how your Rover works along the way.