You asked about the Munsterlander...
I have only seen a few, and did a bit of diggin online for you. They originated in Germany and have been predominatly breed for hunting instead of showing (thank goodness) They point well, but the pointing instinct developes a lot later than most pointing breeds. They work well for pointing and retriving downed birds like phesant and such. I couldn't find much about their use as duck dogs. They do have think fluffy fur and stay warm well in cold weather. But unlike the chessie or lab their fur is not water resistant and in cold weather can freese and form ice in their coat. Also they are very likely to pick up burs and matted fur from dense cover similar to what a britney would pick up. The large Munsterlander is about the same size as a lab... I don't know about the small one. If you want more information on the breed you may check the AKC.

Good Luck!

(Oh and I used to think my lab had a GREAT nose until I got my GSP. So I don't agree that retivers have better noses. But I can absolutly agree that they are calmer )