I've been here a couple times and with the line ups always long, you know this place is doing well! I've usually waited between 15-30 mins for one, and let me say it's well worth the wait.
I've tried a few already and let me say the peanut and choco chip waffle has been my favourite with the twist ice cream. They do let the waffles cool a bit before adding the ice cream with it, but I've always wondered how much more delicious it would be if then egg waffle was served warm and fresh with the soft serve. Mmm.
I missed it when they had the black sesame soft serve. Hopefully they'll have it again someday!