u/classyGent69

I recently started using Correct Toes (both the Original and Sport) because I have bunions, limited big toe ROM, and some plantar fascia issues. I’m also an ultrarunner, so ideally I’d like to use them during actual weight-bearing stuff and eventually during runs if my feet tolerate them.
The part I’m confused about is shoe sizing.
I had an Aetrex foot scan before getting the spacers. I’m around a men’s 10:
L foot: 26.98 cm
R foot: 26.83 cm
Ball width: 11.17 / 11.08 cm
I’ve done months of thru-hiking in regular-width Lone Peak 9+ without many issues. I can also wear an Altra Escalante size 10 fine without spacers.
But when I put Correct Toes on, especially with toe socks, my pinky toe gets pushed noticeably farther out. The shoe suddenly feels like it needs a wider toe box.
It also weirdly feels like my foot gets a little longer with the spacers? Or maybe straightening the big toe just makes me notice the front of the shoe more. I can’t really tell.
So for people who actually use these:
Do you buy shoes based on your normal barefoot measurements, or based on how your foot fits with Correct Toes on?
If a shoe fits well normally but is cramped with the spacers, would you usually go wider, go up half a size, or just find a different-shaped shoe?
Also, if you use Correct Toes for a long time and your toes start naturally spreading/straightening more, does your shoe fit permanently change at all? That’s what I’m most confused about. I don’t want to buy a bunch of shoes now based on measurements that won’t really be useful later.
And does anyone actually run long distances with them? I’m talking long runs / ultras / potentially 100 milers, not just wearing them around the house.
I’m guessing I’d have to slowly build up tolerance, especially since feet swell a lot during ultras.
Correct Toes support told me Sport is probably enough if my bunions aren’t painful, and Original makes more sense if they’re causing pain. Curious if anyone owns both and actually has a reason to use both.
I can also post pics of my feet barefoot vs with the spacers, standing on the insoles, etc. if that would make it easier to tell what’s going on.
Mostly wondering if anyone else has gone through this and what you ended up doing with shoe sizing.