I think you would experience the same problems as any IMAP client would. And seeing how this bug is being handled, it doesn't look like paying for bridge access

I think you would experience the same problems as any IMAP client would. And seeing how this bug is being handled, it doesn't look like paying for bridge access is a good bet to make, IMO. You'll never be confident that the bridge is not going to have a problem. How many emails would you be willing to lose or have trouble with?