I feel like the only guy posting mixed reviews on ever calm, but I'll go ahead anyway. I shot the biggest buck of my life last fall... with a wheel bow (hate to admit it)... just as the buck crossed my trail he locked up and almost split, if it hadn't been for the doe he was following. I definitely think it works with the does and small bucks, but the big boy wasn't thrilled with the foreign scent in his area. I used it on my boots, after spraying them down completely with scent killer spray... I put on all my hunting clothes with rubber gloves to avoid any scent contamination, so I'm fairly certain it wasn't ME he was smelling.
Look, if it'll give you half a percent better chance of shooting a buck, hell... I say go for it!