my bill is on its way 
my case is from clank and I’m very pleased with it, Andrea seems great and their power is really good — the new boards have pull up resistors for i2c built in I think
I see the erica one is listed as 59mm, I feel like erica synths probably has tested that and determined its fine, so I would trust them over my own paranoia
that being said, it does depend on the cables — if I’m using the hosa cables they’re very flexible and I don’t worry too much, but I have had braided cables that feel a bit more snug. You could probably lose 7mm on the lid and the case and not have any issues, but I’m not sure it would make that much of a difference in overall size or weight.