Hey I went fishing with my 4wt Ben's of Holland flyrod I built, its a nice rod but I can throw bigger poppers on my 4wt Orvis Superfine. I enjoyed fishing with it though. I threw a sneaky pete, #10 double wing caddis and some carp type flies. I could get decent distance with it, it's a smooth rod, it's very light.
Heres a video of me fishing with it
https://youtu.be/ULngLIXXA8o