I've been with a group that only wanted to see the "colors" of the club, and nothing else on the vest, except military or veteran or MIA type buttons and/or patches.
Then I have ridden with guys who had all kinds of stuff all over their jacket or vest.
One guy wore so much his nickname was indeed "Pin"!
Lately, I don't wear any paraphernalia on my plain black leather jacket, as my vest has been, let's say, "retired".
I still have my "HOG" vest, although I haven't been to a chapter meeting in a long time so I don't know if it's appropriate to wear that, and I have a bunch of pins on it. I also have another leather jacket that has a Harley patch on the rear, (The huge kind that takes up most of the back), and a couple smaller patches on the front, but I don't wear that much as I simply prefer the other jacket I wear most of the time anyway for fit and comfort and protection.
Have I answered in a confusing enough fashion??