‘re still waiting for Research in Motion to allow Android apps to run on its Blackberry ayBook tablet, as promised last h, but a new report says these apps will eventually run on future BlackBerry phones as well.

In 2012, RIM plans to launch smartphones based on QNX, the same operating system that powers the ayBook, these phones will also include the Android “app player,” three unnamed sources told Bloomberg. The ability to run Android apps on BlackBerry devices sounds like a dream come true — a quick dirty fix to RIM’s app deficiencies — but there are several reasons not to get your hopes up.

Android apps will run slower

As Frommer points out, BlackBerry co-CEO Balsillie has said not to expect great performance out of Android apps on QNX, because they’ll be running through an emulator. “You’re just not going to get things like gaming multimedia, you’re not going to get the speed going through a VM interface,” he said. In other words, don’t expect to watch Netflix through the app player.

Android apps must be recompiled approved

You’re not likely to see a flood of Android apps in BlackBerry App rld, because Android developers will have to repackage their apps submit them to RIM for approval. th ayBook sales reportedly worse than expected, I’m guessing most developers won’t make the effort.

Android apps are stuck in a box

The ayBook’s elegant multitasking, which lets you glide between open apps with a finger swipe, doesn’t appear to let you move between multiple Android apps. In RIM’s official video demonstration of Android apps running on the BlackBerry ayBook, all Android programs are confined to a single “player” app.

Gingerbread apps only

For now, RIM is only planning to allow apps created for Android 2.3 or under. That’s not a huge issue for QNX smartphones, but ayBook owners will miss the large-screen optimizations in Android Honeycomb above.

Follow on Facebook Twitter for even more tech news commentary.