I'm familiar with them, in fact I did a lot of trade show signs and truck lettering for the founders when they first started here in Bellevue, WA before Englert bought them, and for a few years after. I probably could have traded sign work for a set but was not impressed with them for our house. They work great for the leaves that we have here such as Big Leaf Maple, Alder and Cottonwood that roll right over, but we have 80-100' tall fir trees with needles falling and with our constant light drizzle there isn't enough flow to keep them from falling in along with the water.
Sammamish, WA
Epilog Legend 24TT 45W, had a sign business for 17 years, now just doing laser work on the side.
"One only needs two tools in life: WD-40 to make things go, and duct tape to make them stop." G. Weilacher
"The handyman's secret weapon - Duct Tape" R. Green