I tried the Patriot once and it earned itself the inofficial title to be the "best" whistle point - which was not primary designed to be one ... at least I suppose that to be the case.
I can't contribute datas on how it may effect a hunting shot though. But I would definately not want to use anything like that for such purpose. A hisss - okay - but not an orchestra!
I've shot Snuffers and they do hisss - same do Delta Sniper - but I would consider both to be "harmless". SilverFlames are very quiet - at my arrows speed at least, but do make some sound.
Solid blades I shot, like Grizzly, Wolverine and Ribteks, don't make any sound I can hear.