Hi Hamish
Decent quality Chineese capes are hard to get hold of now (and expensive).
We are getting spoiled by genetic saddles with the quantity of usable ffeather and flies you can tie from each cape, devent quality feather is now great value.
I would agree that the genetic saddles have very little or no taper to the barb size and can leace you with a fly lacking the great shape you get with a non genetic hackle.
I have resorted to the Whiting Hebert saddles for most of my loch flies but still need a few capes with feathers with slightly longer barbs, for your "robust" loch flies, I doubt that the Hebert range of saddles would be of any use, too small.
I am going to try a few new capes very soon also sold by Whiting, these may just be the thing for loch style, only trying a couple of capes will confirm.
Have a look at the whiting American Rooster capes, shorter length and they may have more taper, these are mainly aimed at saolwater tying but may just fill the gap left by limited availability of Chineese capes. Approx $25.00 & $5.00 p/p.
Whiting also sell a cape called the "Euro", they say in the description that these wrap flies in the size 10, 12 and 14 range, again these seem to be very much like the "Hebert" in terms of size, I will buy a saddle to compare very soon.
Approx $40.00 to $45.00 & $7.00 p/p.
Possibly the best of the newer saddles that whiting have introduced for our style of loch flies is called the "Flat Wing" Rooster Saddle, I will find out about the size of hooks these are suitable for and let you know. Approx $28.00 & $5.00 p/p
The Flatwing and Euro sound the best, you don't get many flies from a Chineese cape even if you can find a decent supply.
Kev.