Another thought: many people consider Nordost speaker cables to be bright, but how many people have drawn this conclusion using a full Nordost loom?
I have....twice. Once with Valhalla 1, once with Heimdall 2.
One argument against the loom approach is that any particular deficiency in the designer's approach will be magnified.
I agree with this. Sorry, but I have tried many full looms, and none has worked for me. I've had much more success mixing and matching.
Sure, it takes time and effort, but in the end, I feel that I get better results.
As always, YMMV.
That's why they make so many different flavors.
Some like all chocolate, some like Neapolitan. ;^)