Don't be surprised. There will be many apps that will be Android ports. This was necessary in order to get enough apps for BlackBerry 10 at launch. However, as long as BB continues to do well, many devs will start making native versions of their app for BlackBerry.
I really hope so... We need to be unique with our native apps, It is a good OS and it has a good chance to win the race against bored wp8 OS