I find it hard to comprehend... Jaiz Bank, The First Islamic banking Institution granted licence

On twitter this morning, i read that Nigeria’s first Islamic banking institution, Jaiz Bank, has been granted license to operate as a national bank. Though have been hearing of Islamic banking, this is the first time i hear of it name. but then i ask myself, will segregation promote me peace we so long for in Nigeria? Another Question i need to ask, can a christian who does not care if he is one, bank there too? because when i visited the bank's homepage it say and i quote

"It is an alternative financial service offering which is open to all irrespective of race or religion"

I find it hard to comprehend what they mean since the Name alone {Islamic Banking} is understandable to a layman like me to mean for Muslim only.

If you live around ikorodu, when you're going to Sabo through Anibaba, you will see a sign post saying LOAN, MUSLIM ONLY.

What will be the opinion of Muslims when they see CHRISTIAN BANKING?

Even if there motive is right, tagging the bank Islamic Banking is simply a segregation to me.