1. It's out of stock, and I don't know if Ellipse is going to make more. 2. Even if it were "in stock", it would take months (possibly/probably more than a year) to get. 3. It requires two USB cables. This is stated plainly on the site, but it's buried in the numbered list of "important notes".
I have one. Unfortunately, I haven't used it for more than a few minutes due to that last point. I had envisioned using it on my work system, but requiring two USB cables kills it for me. I don't know if the Mac is unique in this, but it only registers modifier keys for the keyboard issuing them—that is, holding shift, cmd, etc. on one side of the keyboard doesn't work for the other side. For instance, cmd+o doesn't work unless the cmd key is on the right as well.
There are utilities you can install to get this functionality working, but I can't install them on my work machine (and even on my personal system, I couldn't get them to work, so YMMV). I had high hopes for this keyboard, but it's likely I'll sell it due to problems with my setup.
Mechanically, it's exactly what you'd expect: a Model F in a reasonably (if outdated) ergonomic package. While a leap ahead of standard layouts, the Ergodox has always had some pretty big flaws, especially in the thumb cluster keys.
In terms of feeling, the Model F is definitely different than the Model M. Some days I'd call it better; some days I'd call it worse. Claims that it's night-and-day are exaggerated, IMO. (I have extensive experience with the New Model F F62 and various Model Ms over the years, from old IBMs to modern Unicomps.)
The problems began after I started gaming on it - and I'd been using them for work for a long time before that (5 years?). You tend to push a lot and push hard when gaming to be sure they key activates, and it's not really ideal for your fingers. And yes, they're "not good for gaming" but that's normally about the deadzone and reset, not just outright causing RSI.
I ended up going through a period of trying out some other stuff, ended up with Rosewill RK9100BR, and then just went to a keychron k8 instead. I have a couple of those now.
I’m now a happy user of the kinesis advantage (though the configuration software pales in comparison to the ergodox) and feel so much better.
I modded all of the 2s with the following boards:
* https://github.com/kinx-project/kint - Great board, requires usb of course. Programmable with QMK.
* https://github.com/wizarddata/Blue-Wizard-Mod - Doesn't support QMK but does support ZMK but is bluetooth. Great board.
I picked the kint up on some pcbway type service, the blue wizard I got off ebay.
I think all the ergonomic keyboards assume you use the opposite hand for the shift key.
I've been on advantages for 20+ years at this point and haven't had any of the RSI that prompted the switch since.
Currently daily on a 360pro. Might want to sell it or reswitch it for something a little lighter and maybe even something linear. Maybe a silent red or lf red.
My guess is that, for most people, myself included, once one has invested the time in learning any particular ergonomic keyboard (Ultimate Hacking Keyboard, Ergodox, whatever), the switching costs are annoying that one just keeps using it
A small number of people seem to get obsessed with the narcissism of small differences in terms of switches, or minute aspects of positioning, or similar matters, but I find that one hits diminishing returns quickly and it's less the keyboard than what's done with it.