Thanks, I do think you can use some carbon spokes with standard hubs but I may be mistaking.
In any case I hope you get to test the wheels out and report back, I might copy the setup for my Venge (2020 model).
it will depend on spokes and hubs.
My friend crashed one of Peter's wheels, and broke 4 steel (Pillar wing 20) spokes. I didn't have enough spares to repair it (from memory, the wheelset uses 3 different lengths, so the moment you break more than 1, the probability you have inventory goes down dramatically), and good luck sourcing these spokes outside of china at a good price. I guess i should have called wheel builders, now that i think of it, but even then, i bought rims without holes in the rim bed for easier tubeless setup and maximum strength, and i didn't want to spend 1 day repairing it. So, i bought a replacement wheel from Peter, ordered the missing spokes from him, and my friend got the 1st wheel repaired by his LBS, so now he can happily crash again and already has a spare
So... if the hub isn't some weird ass bonded thing, and if you have spare carbon spokes of the right length, i dont think it makes a huge difference in terms of repair-ability.
One key difference is stiffness though, if you run a beefy aero bike, with carbon spoked wheels, with 25mm tyres at 110psi, on bad tarmac, wear a mouth guard as your teeth will rattle. If you run wide tyres, tubeless, then if you ride on good enough roads, carbon spokes are probably a good idea if you care about performance. The price difference is decreasing, Peter typically quotes a good set of steel spoked wheels for ~500 and ~700 for carbon, so given that everything is expensive now, 200 bucks amortized over the life span of your bike, if not 2 or 3 bikes, seems pretty reasonable.
I wonder if aliexpress sells spare spokes. i dont think i looked there either, now that i think of it. it'd make a ton of sense, they have such good agreements with shipping companies that you could probably source spares on demand easily. Aliexpress, now that it works flawlessly, pretty much, has transformed the way i source and build bikes. Can't understate the convenience of ordering exactly what you need when you need it, as opposed to over ordering stuff from china (Alibaba & the likes) and shipping large boxes.
As to ride quality, i've bought 5 wheelsets from him, and we're all happy with them. A whole season on them, no issues. Peter seems to be very reliable OEM, and also, wheels are now so commoditized that as long as you order the right stuff from a reputable seller, i really dont see why you'd be disappointed. Peter lets you custom build anything, his pricing is competitive, and he doesnt force you to put logos on the wheels. For example, certain models from Elite are nice (although mostly their rims are too narrow), but i refuse to have my bikes look like Xmas trees covered in logos, unless they pay me, i'm not showing their logo.