Okay i just finished my indoor setup and faced the same challenge so hear me out:

- Get a single speed conversion kit from aliexpress (most you can find are for mtb hubs which means you need an additional 1.85 mm spacer to fit it on a road hub)

- get a chain tensioner to keep tension on the chain (this way you don’t need a rear derailleur)

- get something to virtually shift, here you have two options:
Option 1: you want to spend money —> get the zwift play. Gives you virtual shifting and all the other fancy stuff
Option 2: you don’t want to spend money —> get the qzfitness app (you can also use this app to use your zwift play with mywoosh for example but that’s another topic)

- all steps done? You have a working indoor setup without the need to spend a ton of money on zwift cog. The single speed cog is a lot sturdier than the zwift cog. I did the calculations and single speed conversion kit, chain tensioner AND zwift play came out cheaper than zwift cog

If you have any questions feel free to ask me

P.S. You can use the app i mentioned for all sorts of stuff and controls on your trainer. You are NOT limited to zwift using it. I haven’t really used it a lot as i just got the zwift play but definitely check it out as an option.

Does virtual shifting not work for Zwift workouts in resistance mode?  I've never tried it, so not doubting, genuine question.  I know that in ERG mode, shifting will change the target power, and in free-ride mode, it'll act as a gear change, but not sure about resistance mode in a workout.  Zwift cog or single speed with a tensioner would be really reliable and simple, if it works for your setup.

I use Sensah 11 speed on my trainer.  It's been working for several years and a few thousand Zwift miles.  I routed the cables externally with really big bends to minimize cable wear and friction.

Yeah it would work. You can just turn off ERG and virtual shift. Virtual shifting is amazing on the trainer, but Zwift is kind of expensive to use year round and if I'm just doing a workout I usually watch bike racing or something on the screen.

I bought a set a couple of weeks ago and only got to fit them on Saturday. I can't use the bike they're on right now until I get tyres but the brakes were a doddle to set up. I did have the trim the front hose but the rear was only just long enough for my bike. The brakes arrive pre-bled and I didn't realise they had a shorter hose from the lever that the remaining hose connects to. I like that a lot and bleeding the rear brake was just the same as shimano. Brakes feel nice but there is a lot of pull on the lever to require the pistons to move. I'll have to update here once I get riding them. They look great and weighed 400g with pads for front and rear once front hose was trimmed about 150mm.

Any updates yet? How do they perform in terms of braking power if you compare them to XTR or Level brakes?

The Grevil clone from Peter from Xiamen carbon speed. It's on their website under gravel frames, from memory.
I have one, it's great. Trust me, i'm a stranger on the internet.
it ticks all your boxes.
Pinarello is very good at smaller sizes, and it's basically a clone.
if you have acne, it will clear it.
if you have dandruff, it will cure it.
You can tell him Serge le manifique sends you. You will gain nothing. I will gain nothing. But i get to call myself Serge le magnifique.

I see ICAN have it on their website as the X1.   Searching here and on Google still show zero builds...

https://www.icanbikes.com/Products-list/carbon-full-suspensio-mountain-bike-frameset-27-5-x1/