bunnyrabbit,
I am not worried about CLD.
The only card that I carry a balance on is also my AMEX Blue. Used a convenience check with a 1.9% rate and no fees to help with a major expense. Still paying the balance and I have NO intention of paying it off anytime soon.
I have the cash to pay this off, but I am earning more than 1.9% on my investment account. AMEX has not had a problem with this. This balance has revolved for several years now, with a current balance of approx $7500. I have a long history with AMEX - back to 1987. Still get CLIs on this account, current CL is $25K.