First of all, i am from Egypt, not Bahrain, however i have the same issue.
The numerals being displayed are used in Arab countries, you are correct.
However, we are used to reading the numerals as used in the old fuelly, because this is what the whole "internet" uses, so yes we can perfectly read these numerals, but they don't feel comfortable to the eye browsing the internet.
Also, scientifically/historically speaking, the Arabic correct numerals are the 0,1,2,3,4,5,6,7,8,9 which are the "Western Arabic" in this Wikipedia link
http://en.wikipedia.org/wiki/Eastern_Arabic_numerals
On last thing, i -personally- would prefer the currency to be LE or EGP instead of it's Arabic initials ج.م. again, for the sake of matching what we are accustomed to all over the internet.