Ask HN: Beginning Mobile Developer Career Advice

My goal right now is to work (at a small company or startup preferably) as a mobile developer. With that goal in mind, should I focus on learning Objective C for iOS or Sencha Touch? I'm leaning towards Sencha Touch for several reasons, but my problem is that I don't know what is used in the industry. Which one would help me get a job at a startup to develop mobile apps?

Here are my pros/cons thoughts:

Obj-C Pros: - Direct interaction with the iOS SDK and iOS hardware - What the industry and startups do? Cons: - It will take me longer to be effective (big learning curve) - I can't use Obj-C skills to develop for other devices.

Sencha Touch Pros: - Faster to be effective (smaller learning curve) - I can use my skills to develop for several mobile devices at once. Cons: - Cost of a commercial license - Does the industry/startup community use it??