There’s no clogging up the chain.
I have a set of Beyerdynamic Custom One Pro and an Fiio BTR3. The BTR3 is clipped on the headband and looks almost seamlessly, you can’t feel it, nobody notices it. They’re connected with a 15cm cable that is just the perfect length without leaving any redundant wire hanging around. It’s just the perfect conversion to wireless.
Since both my Custom One Pro and BTR3 are physically falling apart after some years of extensive daily use, I want to buy Beyerdynamic DT700ProX and I wanted to get BTR7 for this, but the form factor is the reason I hesitate. I bought a leatherette case with a clip for it on AliExpress just to physically see its dimensions before I buy the device itself and it’s just so awkwardly huge. So now that I discovered Qudelix whose form factor is so much closer to BTR3… I think that’s gonna be my choice! Especially that I’m never gonna once see/use that screen of BTR7 and so on, qudelix seems like just the better choice for my use case. And seriously, the major use case for these things is conversion of large wired headphones into wireless, permanently clipped onto them, connected with a 15cm cable that just fits snuggly around the headphone.