"rw" wrote in message
m...
OK, an advantage in having a transition to a softer-grade section is at
least plausible.

for whatever reason, the Harvey design works, and works well. One advantage,
not noted, was that one seldom needs drop below 6x, even for Tricos and the
like. This leader design will present dries with a series of gentle curves
in the tippet section only, and one needn't resort to 7x, 8x tippets to fool
very wary trout in clear water.
Tom