The scissors on a SAK is the most overrated tool in the array. I have three SAKs sitting on my shelf with broken springs. I have replaced a couple, only to have them break again. For scissors, I carry a Micra. They always work.
There are knives and there are knives and there are scissors and there are scissors.
I've gone back and forth from small knives to larger knives and have been carrying a knife in the Opinel 9 or Buck 110 range for years. That's my preference and may not be others.
For scissors, the benefit of the Victorinox scissors is that they cut precisely rather well. The downside, as you note, is they are frail. A buddy of mine prefers the Wenger style for this reason.
The other downside of the SAK scissors is that they can only cut thread and little stuff. Like you, I find the Micra scissors are infinitely more useful for my day to day tasks. Again, my preference which may not be shared by others. (For that matter, I find the Micra more durable all around than any Victorinox product I've owned).
The downside of the Micra though is that scissors need to be maintained in order to cut cleanly along the full length of the blade. I've learned to adjust the cutting blades by bending them carefully to ensure a clean, consistent cut. It's like truing a wheel - it requires some feel. If tuned, they cut like lasers. If not tuned, they can't cut paper while SAK scissor almost always will.
People who are able/willing to tune the Micra scissors would probably have a better experience with the Wenger scissors. Or the Victorinox scissors for a long as the spring works