I've experienced both the lineup and just a walk-in visit without a line.
I assume this place gets really busy in the summer as I had to lineup on a Sunday afternoon during July for 15 minutes. They have a lot of different flavours and different styles like ice cream sandwiches, cone, egg waffle, or cup.
I always have gotten the ice cream sandwiches here. One time with golden oreo ice cream with oatmeal cookie. Another time with birthday cookie with birthday doh ice cream. Cannot go wrong with any of the combinations.
Only drawback is that there are not really any seats to enjoy your ice cream. There is a bench and that is all. I wish that there is a sitting area. And is it worth the lineup on a busy hot summer day? Yes, just do not lineup for more than 20 minutes.