Many months ago I was talking to a friend at work about tools. We got to talking about bit ratchets. He was interested in buying one. The next day I brought a few of mine at work so he could see up close what they had to offer. I showed him the PrestaCycle and he really liked it.
And we talked about an obscure pen driver that can also go in T-handle configuration.
Today he gave gave me one!
He found a couple of second-hand ones and got one for me too.
It has no retention, and uses double-ended bits with ball detent. Great size and robustness. The pocket clip is a little flimsy but it is a nice edc tool.