I've been snooping around, trying to get more information on the Schneider. It appears similar to the 28mm LS lens for Phase One, which unfortunately hasn't gotten a whole lotta love around here.
I asked Schneider and got the following:
yes, indeed, basically it is, the lens design of Mamiya 4,5/28mm medium format lens.So, now it's really wait and see. But how can you not want a lens at least a little, knowing it was calculated by Mrs. Ebbesmeier?
But, and this is very important, Mrs. Ebbesmeier did recalculate the optic design and we get a slightly different version in a three cell unit for better centering for an excellent performance.