$600+ for 1
meter What the heck can anyone do with ~3ft of cable? The HE-6 is too heavy to strap the amp to your head too! At 16lbs my integrated would be a bit heavy on the head even without HE-6, and with the HE-6 even the Lyr might be a bit much without shoulder straps. That cable would look like a big Y-split with a 1/4" pigtail coming out the back
There's lots of nice cables out there, nearly all of them costing a third or less of that. I thought ALO was a rip-off until I saw the Cardas Clear pricing. Ouch. The stock cable is nice enough, for free, with the headphones and you get three whole meters of cable! It sells for $150 on its own as an upgrade for other HFM cans. Beyond that there's plenty of stuff from Moon, Q, Toxic, DH, and virtually whoever else you can think of, believe it or not,
including ALO for way less money than that!
Also if getting a custom cable for it, I'd really suggest sticking with an XLR-terminator rather than 1/4 so you can get the 1/4 adapter like how the stock cable is, but also keep your cable and use it with a banana/spade split if you decide to go the speaker amp route later. It's a good setup. Balanced, 1/4" and speaker taps all with one main cable.
Those pads are way more important than the cable. Definitely see if you can get the velours. If you can't, if you happen to have any compatible pads sitting around from Beyer or the like floating around, they'll work too. I haven't tried my leather/pleather options on the HE-6 yet, but from HE-400 experience, it's a huge difference. I can see how some may like the leather/pleather sound, but IMO that's just not the sound any of the HFM cans are about. I suspect for demos they're sending the pleathers because they're easy to sterilize on return, and used velours can get pretty yucky pretty fast. But it's just not a good display of the tonal balance
At least it's less icky than used chin cushions on violin demos....eew.