I did actually take the opportunity to fish this fly last week on the Lochsa River. Caught about half a dozen smaller bows and cutts in half an hour or less on one really nice stretch of water, not far out from the bank.
Don't just reserve this one for the October ( September ) Caddis hatch. Might prove to be an effective attractor when nothing is happening. I wonder if those fishies up on the Lochsa were taking it for a small hopper ?? Not sure they have been around long enough to have memories of an October Caddis !!
The fish are always right.