RIBELLE RUN 2

I've tried everything you mentioned except the Lowa's (I've even worn the cork Sole insoles). It's a crying shame that LaSportiva can't widen their toe boxes!!!! Two shoes worth your consideration per my efforts are: 1. Scarpa Ribble Run 2 (sizing is weird, must try on, not the same as previous Scarpa models). Toe box is more generous than LaSportiva, but not Altra. Very durable and good traction, not heavy.  2. Altra Timp BOA 5 (I've only tried BOA version, lace version may be fine) This version of the Timp has Vibram, Altra width and actually more like the Olympus than LP. Previous Timp models did not do it for me, this one is worthy.  I know nothing about the Flux footwear,  but am now curious. 

I too have gained appreciation for the Scarpa Ribbelle Run. Have tried most all the other usual contenders too, Ribelle Run is current fav.

Looking for some experiences :) Looking for new shoes that bridge between approach shoes and trailrunning shoes - essentially trail running shoes you're comfortable doing class 4 scrambles/climbs with. I've tried Scarpa Ribelle Run 2, and while they are really great for this, my feet hurt as they are just too narrow for me. Otherwise these would be like the perfect shoes for me. Great damping on the heel but a stiffer toe area for those sketchy parts is amazing Arcteryx Vertex Alpine is another one of these, but apparently that one's even narrower...

Do you think sportiva tx2 has enough cushioning in the heel? I can really recommend the ribelle run 2’s except that they’re just not wide enough for my feet. Which i’ve learned after getting blisters on the same spot for the 4 times i’ve worn them :)

For reference, I'm normally a UK 10 / EU 44.5. I've tried the Scarpa Ribelle Run 2 ( EU 44.5)s, which are too narrow. Dynafit Transalper 2 (EU 44) are just a touch too narrow, but might work, the 44.5 felt baggy. I had some La Sportiva Tx Guides (EU 44.5), the first pair, bought in 2022 were great, but the next pair I bought last year were far too narrow. For comparison, I've got: La Sportiva Mutant (EU 44.5), which are wide enough and comfortable, but a little on the short side. Adidas Terrex Solo Swift (EU 44 2/3), excellent, and fit well, but not enough cushioning for running. Unsure about the new Skychaser Solo shoes. Salomon Speedcross 6 (EU 44 2/3), which fit well, but the deep lugs make them unsuitable for scrambling. Salomon X Ultra 360 GTX (EU 44), which despite being half a size smaller than my normal UK shoe size, fit quite well. Salewa Mountain Trainer Lite GTX (EU 44), which fit well, but are bulky. I'm after both a non-waterproof and waterproof shoe.

For reference, I'm normally a UK 10 / EU 44.5. I've tried the Scarpa Ribelle Run 2 ( EU 44.5)s, which are too narrow. Dynafit Transalper 2 (EU 44) are just a touch too narrow, but might work, the 44.5 felt baggy. I had some La Sportiva Tx Guides (EU 44.5), the first pair, bought in 2022 were great, but the next pair I bought last year were far too narrow. For comparison, I've got: La Sportiva Mutant (EU 44.5), which are wide enough and comfortable, but a little on the short side. Adidas Terrex Solo Swift (EU 44 2/3), excellent, and fit well, but not enough cushioning for running. Unsure about the new Skychaser Solo shoes. Salomon Speedcross 6 (EU 44 2/3), which fit well, but the deep lugs make them unsuitable for scrambling. Salomon X Ultra 360 GTX (EU 44), which despite being half a size smaller than my normal UK shoe size, fit quite well. Salewa Mountain Trainer Lite GTX (EU 44), which fit well, but are bulky. I'm after both a non-waterproof and waterproof shoe.

I used Scarpa Ribelle Runs for easy scrambles (UIAA grade 3 iirc), any shoe designed for sky running will work decently well

They are narrow - I liked the ribelles but my feet didn't. Other optjon - post your shoes to a Vibram re-soler; sole and trail in the UK are fab; get the peak sole put on, you won't regret it. I've used it multiple times on muddy mountainous routes. I imagine there is similar in the rest of Europe (I'm assuming you're in Europe or UK based on the use of KM)