No I don't trim them. Actually I tried trimming and the break off method but neither seemed to work that well for rooster so I came up with a different way. I also had an insane rooster so I wasn't real thrilled about him going after me either. I'm going to try launching it on Kickstarter and see if it's a viable product. If you would like I can post the link or PM you when I launch it. Hopefully it will be this month. I've been using it on my rooster for 2 years or so and been great. Better for the hens better for me, pretty much better for everyone. I went into the feed store and was showing them a picture of the rooster and they asked about it and were interested so I'll give it a shot.
Yours seems to be more blacken on the end. There is still yellow on the end of Punk's (picture) spur though there is some part that seems to be sluffing off. It may be that yours just never sluffed off if he wasn't aggressive. The only think I can think of that would be worrisome is if there is some bacteria or other eating the material (like a cavity in a tooth) and it makes it into the quick. Otherwise it should be fine if it doesn't bother the rooster or the hens. If you can catch him and wiggle it and see if it causes him pain. I would think that it would be tender if that was happening. Spot the insane rooster only had one spur because he knocked one off on something. The one he had left was never pointed like this, much more rounded. Probably because he was always hitting things with it.
That's true, he's NEVER been aggressive towards us or the hens and to my knowledge has never had to fight off anything and thank God for that!