Received mine last week and I've been using it off and on the last few nights. It's been just as responsive (if not more) as the pro clip right out of the box. My UTC is just zip tied to my headphones for the moment until I figure out how I want to set it up permanently. I really like that there isn't that extra cord from the pro clip to snag on the chair or keyboard tray (or on the pro clip itself sometimes due to it's mounted position). I also like being able to plug in my mic without having to gingerly adjust the pro clip out of the way. It's light weight, combined with the mounting position, makes me forget it's even there.
Bartek made the ordering process painless and answered all my questions right away. Even though it took a little time to arrive (but still came in sooner that I was expecting), it was well worth the wait. Many thanks to you, 10/10 will order again.