Is getting 2 bbm/whatsapp apps safe?

There's a way you can download 2 more apps of bbm and whatsapp without jailbreak on one iphone like this photo. Is it safe for privacy? Or is it dangerous Is getting 2 bbm whatsapp apps safe

All this shows is you can have more than one icon on the screen, with the second one named differently.

BBM does allow you to have more than one BBM ID, so this works as well.
Is it safe, no more unsafe than having only one app running.

And only "dangerous" if you are into playing mind games with people using instant message apps, and forget who you are pretending to be, between icons.