The 31 day notice account even at 1% might be interesting if someone has some funds sitting in their BOI current account while they consider other options. Also BOI is a bank where some people are reasonably happy to have more 100k so that could be another attraction.
Most of the savings accounts can be opened online but the 31 day notice seems to require an appointment and visit to the bank.
"It’s never been easier to apply for a Bank of Ireland Savings Account. You can book an appointment in a Bank of Ireland branch to apply for a Savings Account."
They don't want to make it easy, that 31 day notice would be reasonably popular if it was as easy to setup as the demand deposit which you can do in the app I think.