That's such a strange UI. I couldn't tell you the fifth letter of most words without writing them down, let alone that of my 20 character passwords.
I hope they insist you use one of those card readers too.
I'm recently switched from a bank that uses regular passwords to a bank that uses partial passwords, and it took me a week or so to get used to this, and it is a little slower (takes me like 10 seconds instead of 1), but it's nothing significant.