Prefer higher wool content in the blend than mohair and the more important variable is the quality of the wool used in the cloth.
The 90% was difficult to tailor, it really was like sewing a rubber mat.
Don't know how the Tonik wears, only made one and didn't want to use the Tonik cloth again. Actually I don't use or have the Dormeuil line anymore.
Sold two mohair suits this week, one Harrison's Cape Kid and one from Thomas Fisher Cape Breeze books. Will see how they perform
Mohairs in the late 70's and 80's seem to have been different from what is available today. More earth tones, patterns, stripes and the cloth felt different. Don't know why.
The 90% Tonik is scratchy and stiff. I'm not surprised it resists the iron as much as it resists wrinkles and humidity. I have suit lengths of 100% mohair and dupioni silk and I suspect neither of them are going to be easy to tailor.