Hey brother, it generally gets negative reviews. Search for "hop blocker" and scroll down a bit. You'll see a few conversations with some folks who have use it. Mostly it seems to not work well with full hops and is difficult to use. A few people seem to regret purchasing it and have gone back to whirlpooling. I'd suggest practicing and getting better at the whirlpool and accept that you're going to lose an inch or two or nasty trub that you probably don't want in your fermenter anyhow.
"I have just returned from visiting the Marines at the front, and there is not a finer fighting organization in the world!" -General of the Armies Douglas MacArthur
Kegged: Prussian Pickelhaube Pilsner, Demoness Hopyard
Bottled: Fruit Lambic, Belgian Lambic
On Deck: Red Magnum
In the Hole: Spider's Tongue