Hello,
In terms of payment of a dividend or interest on your savings, I would say there is zero point in having a Credit Union account. Infact, I'd go half a step further and say that most of he Credit Unions have poor online facilities, less than perfect opening hours and a very poor selection of services - excluding basic savings & loans.
There is a trade off to be found somewhere (I'm not sure quite where to be honest), between less well trained & financially astute staff at the Credit Union (some of whom will be more focused on the community spirit than the possible risk of granting a loan, not up to speed with lending policies, or regulations) and the fact that generally, the staff in a Credit Union are very nice to you and will speak to you directly in person or by phone, unlike the situation with many of the Banks forcing you to use automated telephone services which often do little more than drive you nuts and take up far too much of your time without ultimately dealing with the reason for your call.
I like the concept behind the Credit Union movement, that of a semi-social ethos. The theory of the local Credit Union being there to help its members, based on a commmunity (or similar) based infrastracture is excellent - but sadly, practised less and less these days. Once upon a time, building societies were somewhat similar, but look whats happend to all of them (and I expect in time, Credit Unions will go much the same way) !
Other than to ensure you don't have all of your eggs in one basket, I don't think there is much point in a Credit Union account these days and fear there never will be again ......
Oh, btw, most Credit Unions should be able to provide you with sufficient details to permit you to transfer funds by standing order / occasional electronic payments ... just don't count on them offering you similar facilities, if you want your money back - it'll be a cheque & if your lucky on the day or night, they just might cash it for you while your there, but otherwise your waiting 6-7 working days for it to clear