onenerdykidWhat boots are you having issues with?
We partnered with Skywalk and use their best compound for grip and long life. Obviously, favoring one too much over the other will cause the other to suffer, but the compound we use can take a beating and still offer a lot of grip.
I had issues with the Dynafit Mercury and Fischer TransAlp.
I forgot to take a closer look at the rubber on the Backland and XTD at SIA, but I'd be interested to try them out to compare, especially with the XTD's integrated WTR pieces.
I just don't understand why companies (Fischer and Dynafit in my experience) use such a soft rubber. It is substantially softer than any of my hiking/mountaineering soles. It's not like I'm trying to climb 5.12 in my ski boots, and it seems like durability on non-replaceable soles is a common issue with consumers. I guess I can see the merit of an ultra-grippy sole for boots like the TLT's, Backland, Travers, etc. as they'd be more suited for more technical ski mountaineering, but putting a sole like that on a free-touring boot like the Mercury or Transalp seems like overkill and inappropriate. I'd be stoked to see something like a Vibram Mont sole on a ski boot.
On the manufacturing side - are there limitations as far as what kinds of rubber are compatible with the various plastics of ski boot shells?