They are just retooled Alps Blues, and because of this are very similar to Alps Blues. I would rate them as worse than the very best reclaimed Alps Blues but the Matias give you a way to get 80% of the way there without having to go through the hassle of finding and cleaning a full keyboards worth of top quality switches from donor boards or paying a premium for someone else to get them for you. I do not rate either as an exact match for buckling.
If you aren't trying to replicate the sound then I would just go down the tactile route rather than clicky switches. Having to add a click mechanism (leaf or bar or something else) introduces areas for rattle, scratch and other problems. Granted a good and strong click mechanism can be a tactile moment in itself, you can get very similar from a good tactile switch without a lot of the potential problems caused by the click mechanism.
Have you considered that your RSI might be caused by the buckling springs? They are pretty heavy to type on all day every day and I switch to a keyboard that is lighter spring weight than I would normally use when I have a day of document writing to avoid such pain in my fingers, my preference is for my 40% topre board as that's still really tactile. My normal preference is pretty heavy progressive spring (as labeled by Spirt, its not a true progressive, more like a cliff face) with weights around 60 to 80g. I like higher weights as it means more tactility from the switch. Just a thought.
Alps (and Matias Alps) are painful to get and test in a working state because as you say you need a full board that has to be soldered in. There is the the added pain that the alps might not even be in good condition. MX obviously you can use a hot swap board and it super easy to get hold of brand new switches, make frankenswitches, and so on. Only real answer I have for this is to try and get to keyboard meet ups, not going to work for everyone but otherwise you pretty stuck unless you can buy with a good return policy.