The Docters that you suggest are not available here, as far as I know. I have never, ever seen them in shops or on the Internet providers.
The Docters are available in the Netherlands, Ronald.
http://www.roskamoptics.nl/
My reason not buying them where the heavy weight and that they are not waterproof compared to the Habicht 7x42 I bought instead.
But I'm still keen on having a pair for dusk/night watching of badger, deer, boar, owls, etc. But you can spend your money only once, so for the general use the Habicht fitted my demands best. And still do to day of today.
Due to our earlier conversation I tried the Canon IS 18x and 15x.
They where suprusingly nice to handle, but something why they don't fit my requirement are the small DOF and the large minimum focus distance.
I had a lot of trouble of putting a great tit in focus while the bird was hopping from branch to branch and I was turning the focusknob like crazy.
But for more open field observation for waders, ducks, etc. these IS bins may not be forgotten.