Campbell Sailer propeller

[cmedsailor]

Hello,
Is anybody aware or using a Campbell Sailer propeller? They are supposed to have thin blades with less drag than a "conventional" fixed 3-blade propeller but what about power during motoring? Are they inferior? Any comments about them?
Thanks

 

[davidbains]

They seem to be made in Canada to order.
This site is informative and comparisons are made with other designs.
Price on application only!!

http://www.westbynorth.com/

They are a skinny fixed three blader and as such a compromise like so much other equipment.
I am very pleased with my Kiwi prop, but they are nearly £1k. Would be interested to know how much a Campbell is delivered.