mad jock,
I'd also be happy to test your rotary version....the one WITH a clip or two for the map. Maps are a bit of a problem in an R22. I stick mine under my left arm, or by the side of the seat. But students just starting on nav have a real problem trying to fly and reach for maps in strange places at the same time. So they trying putting the map on top of the clipboard, and of course it falls off..... I haven't found an answer as yet.
Other rotary thoughts, especially for R22 pilots - needs to be narrow; I think the one I have, which Pooley's do, is even narrower than A5. I used to have one of those ex-mil ones with the pencil sharpener and light, but it's too thick; otherwise it was great. Pooley's trifold helicopter one is the nearest I've found to the perfect rotary kneeboard, but again, some people think it's too thick.
I'll be happy to test yours out on a couple of students if you like.