For almost two decades, I kept a video of the Glacier Express run that was shown on PBS. I just loved what I saw. The fascinating bridges and tunnels. When we got to Switzerland, it was a must. We rode the Glacier Express on my birthday.
What we found is that you really don't see the bridges and tunnels the way the helicopter did. You ride over most bridges and you go through all of the tunnels. Sorry, missed it. The scenery in the alps and over the Oberlap pass is very scenic but you can see similar scenery on other train runs.
It's really a long day from Brig to Chur or the reverse. RS describes both cities as ugly industrial cities that have great train transfer points.
It's really out of the way from the rest of Switzerland. We were staying in Lauterbrunnen and it took us 2 hours to get to Brig to pick up the G.E. and over 2 hours to get back.
If you have a short visit to Switzerland, I would think twice about the Glacier Express.