An update to my experience with the Quickie, now that I have some hours on it.
I find it works well with my 6BQ5 amps. It has a lively quality and a wide soundstage in my system. It's not perfect but it's entertaining to listen to - not sure how else to put it. Engaging maybe. These days my other tube pre is gathering dust, I keep using the Quickie !
The kit I had was a gift, and wasn't ordered with any extras. From the time I've had with it I find the Quickie is a keeper, so I will be ordering an enclosure (I messed the measurements on my DIY version) and the PJCCS, and of course the badge.
Looking forward to more hours on the Quickie, and with any luck try another Bottlehead kit sometime.