Definitely not worth waiting in line for two hours. I get that it's a different style of cheesecake than what we're used to in North America but I was pretty disappointed. It's like a bland slightly sweet souffle. We also had the madeleines, which were grainy in a cornbread sort of way.
Thankfully my mother-in-law was the one who waited in line for them, not me!
It's certainly a novelty so if you have absolutely nothing better to do than wait in line by the gross bus depot for a few hours, go for it. Just don't say I didn't warn you.