That thing is pretty hideous, and I question how effective it would be.
There's a better Canadian product on the market, and it's the Heathen produced by Insite Arms. It's timed by the user, so no gunsmith is required if your barrel is already threaded. It works great at mitigating recoil and maintaining proper sight picture (last one is hugely influenced by proper fundamentals as well).
I use one and love it. It currently sits on my 6.5 creed match rifle, replacing an APA Gen II Bastard. The brake does as advertised, and it does it well. The first main port is directed 90 degrees from the shooter (which directs about ~90% of the gas), so all the blast is directed to the side. In brakes such as the APA Gen II and 419 Hellfire, the ports are slanted back at the shooter, directing blast that way. This can certainly produce a nuisance for the shooter, and in some cases even obstruct vision as the blast directs debris onto the shooters eye protection or bare eyes, if shooting in wet or muddy climates. I didn't realize how obnoxious the APA brake was until I switched to the Insite Arms Heathen.
At least 6 of the top 20 shooters in the MLRSC PRS match in Ontario this year were using the Insite Arms Heathen brake. The #1 shooter was using the Insite Arms Heathen on his rifle, and he is currently ranked #1 in the PRS series. Better shooters are definitely gravitating towards this brake, as they see how effective it is.