I have tried to come here several times over the past couple of months and the lines are ridiculous. It can easily take an hour or more for you to order. I can't imagine it is worth it. There are many other ice cream places, with better tasting products and more flavours. I can't think of a reason to be in a line that stretches down the block.
If you're in the area, can afford it, and there's a short line, then I would recommend trying it. But in most cases where the line is long, go somewhere else. You aren't missing out on that much.