The good folks at Uintah Fly Shop of Salt Lake City, Utah, Justin & Richard Dickerson, offered sample flies in exchange for honest reviews of their shop tied flies. I responded, and being quite particular about fly quality I didn't know what to expect, given that many shops claim to tie high quality flies. I was pleasantly surprised.
The flies I received were as follows:
1 Rainbow Warrior #18
1 Rainbow Warrior #20
1 Rainbow Warrior #22
1 Adams Variant dry fly #14
1 Elk Hair Caddis Tan dry fly #14
1 Elk Hair Caddis Grey dry fly #14
1 Deer Hair Caddis dry fly #14
1 Adams Parachute dry fly #14
1 Adams Irresistible dry fly #14
1 Eastern Green Drake dry fly #14
1 Partridge & Orange soft hackle #14
I pulled, and tugged on each & every one, and every part of each remained intact. The proportions are all very good and except for a bit of crowding of the hook eye on the parachute Adams I found them all to be tied extremely well. The hook eye on that Adams was also clogged a bit with head cement, but IMO, that's not a reason to shun such a fly. Even though that can be an annoyance, it's not difficult to clean a hook eye. It also appeared as if all the flies were carefully cemented, which is not often evident on flies of lesser quality. All the tag ends of the tying thread had been carefully cut too, another indication that there was some care in tying them.
The only test I wasn't able to perform was actually taking them out to the water & catching some fish on them. I'm sure that will be done in due time.
Based on these samples and my own 48 years of tying, I would have no qualms about recommending these flies to anyone and certainly would have no issue with using such flies myself! I would expect them to be durable & perform as well as they look!