I have scratched and pricked myself on liverock and sps dozens of times when i first started. Luckily i never had an issue. Im more careful now. If i ever do get hit by anything, i have a spray bottle of rubbing alcohol and soak the wound in alcohol, then wash with soap and water.
Lately, i have been wearing full arm length insemenation gloves from amazon, but the things spring a leak if you even look at them. The heavy duty, waterproof AQ gloves are garbage imo. They provide zero dexterity with your fingers, and drive my skimmers crazy. I also use very long stainless tongs when i can, to keep hands out of tank. Its more to protect the water from contamination.
But yes, most everyone reaches into their tanks......