It will likely get reported from any credit union, but that's definitely a question you should ask. There are a few other things you should ask, too.
For instance, there's a local credit union here that does savings secured loans, but they have a minimum $50 monthly payment on any loan. That doesn't work very well for the purpose most of us have for these loans and how we want to accomplish that.
You also would want to clarify how they handle it if you quickly pay the loan down supstancially (but not completely). The common advice on these loans is to pay them down right away to 9% of the original loan amount because that gives you lower utilization of your credit and has a positive effect on your scores. Then you stop paying the loan for awhile (or just pay a lot less every month) in order to keep the loan open. Many credit unions will let you pay down the loan, but they'll require you to keep making your full payment, and the loan will be paid off way earlier than you want.
Another question is about the credit pull? Do they do a hard pull? It may not be a problem if they do, depending on how many hard pulls you've had recently, but it's something to be aware of.
