Unfortunately, the Escalante 1.0 had an upper that didn't provide any support on any kind of corner. I have a memory of running in them on a wet track where my foot was sliding off the footbed a half an inch on turns - it just didn't have any kind of lockdown. And they stretched out as well - so they became a little baggy after purchase.
The Escalante 1.5 remedied the weaknesses of the first version. The shoe has improved the mesh by creating more reinforcement on the inside and outside of the shoe with a thicker weave - it didn't resort to uncomfortable straps or wires for a better lock down. Now, it provides enough support to me so that I didn't experience the sliding from 1.0.
|The weave under the logo is thicker and has less "give"|
Altra firmed up the midsole material just a tiny bit - its not quite as marshmallow-y as the first version, but keeps it pretty close to what made the ride for the Escalante 1.0 so special. It prevents the foam between the bottom of the rubber outsole from bottoming out (the spot between the rubber pods with "Innerflex" bulged out and wore on the ground in 1.0 - now it doesn't).
The rubber outsole is super durable - unlike the pods on every model of Torin it doesn't wear down to the foam. I've had three pairs - the lifespan of the 1.5s is well north of 300 miles - I do feel the EGO foam losing some resiliency around that point but they continue to be wearable and show no loss of integrity in the upper.
The Racer series has a completely different upper than the 1.5. It isn't a stretchy mesh - it is a harder less flexible weave that provides even more support on a track. It is more aerated with bigger holes to aid in ventilation. And the midsole compound is even firmer than the 1.5. I'd rate the three shoes like this, with a 10 being the bounciest:
Escalante 1.0: 9
Escalante 1.5: 8.25
Despite the changes in the upper and midsole, I have found the Racer to be very comfortable on both the road and track, and wouldn't hesitate to wear it in distances including a half-marathon. For a full 26.2, I like the extra cushion of the 1.5 version.
I haven't put many miles on the Racer, as I generally prefer the 1.5 for training and save the Racer for, well, racing.
The Escalante 2 will provide more support in the upper and slightly more rubber on the outsole , according to roadtrailrun.com - but in my view, this isn't necessary. Altra has a super good thing going with this model, and here's to hoping they don't destroy what is my favorite shoe of theirs to this point.