Depending on how the genes segregate out, you can end up with cochin-y looking sizzles--I have a number.  Unfortunately, most have either the wrong number of toes or the wrong colour of skin.  Depending on what they are bred to you can work back to the cochin standard or forward to the sizzle (working) standard.
Definitions:
Frizzle: ANY bird carrying the frizzle gene, breed does not matter (unless you are in Europe where frizzle 
is a breed)
Sizzle: a bird with all silkie traits except for feathering which is NOT silkie and IS frizzled.
Smooth sizzle: a bird with all silkie traits except for feathering, which is normal feathering--not silkie, not frizzled.
Cochin: a breed in which frizzles are common, and is the breed most commonly used to breed the frizzle trait into silkies to create sizzles.
Silkie: does anyone NOT know? 
Curley: aka frazzle, a bird with two copies of the frizzle gene; feathers tend to be drittle and easily broken.
Frizzled silkie: a bird with both silkied and frizzled feathers.
did I leave out anything?