Has anyone used these modified eyepieces?

http://www.apm-telescopes.de/englisc...eyep/zeiss.htm

What do you think of these microscope eyepieces
made to fit telescopes? For instance, they have
one that costs 500 Euros, is a 16mm with a 62 deg.
FOV. What would make someone buy that over a Nagler,
for instance? It's my understanding that all modern
microscope eyepieces are made to work with
"infinity focus" microscope objects so how do these
microscope eyepieces gel with a telescope?
In the past, one way to vastly improve a microscope's
performance was to put an telescope's orthoscopic eyepiece
in it in place of the microscope eyepiece. Result was
in most cases a wider, better corrected and flatter FOV
than with even compound microscope eyepieces.
I've no prejudices against using eyepieces from another
"specialty" for a telescope, I'll use whatever works,
including a barlow I have that was made with a negative
achromat from an eye testing machine! But in the past
I've seen where certain spotting scope eyepieces had been mated to
astronomical telescopes with less than desirable results.
-Rich