I'm all for tattoos, I have some myself, but I don't think Pokemon is necessarily what to get on your skin permanently. It's your decision ultimately. If it means enough to you, go for it.
Pokemon means a lot more to me than a lot of things I can think of :p I know that sounds sad lol, but the series reminds me of my past, it is probably the best stress reliever I've ever had and I can't predict the future but I can see this being one of the few series I pick up in my 30's and beyond :p
I'm still debating though because I agree with you that tats should mean something to you and there are a bunch of other options I have.