This was amazing to play, I can really see the seeds of something that could be expanded greatly.
The mechanic itself works really well, a few things:
1. The 'pearl' trajectory being affected by the players velocity is great, although I think this might need to be tweaked while falling.
2. The climb mechanic doesn't seem necessary provided you reduce the delay time for pearl throwing
3. I don't quite understand the switches, are they timed?
4. The levels are a bit unforgiving, but maybe thats a good thing :)