I have three visible tattoos (4 if you count my upper back in certain shirts) which includes an upper arm tribal, a full sleeve in progress, and a wrist tattoo and I haven't had any issues with them. I got two of those visible ones when I was already working for a place and asked them beforehand if I was allowed to have them as they would be visible (obviously they didn't mind). My current job doesn't care about them as they aren't offensive and they don't take away from me doing my job. I say if you want a tattoo, get it: it seems like most places care more about if they're offensive in nature or not and in very visible places that cannot be covered with a long sleeve shirt. Just find an artist you're happy with and think long and hard before taking the leap if you want a big visible tattoo.