Thanks for the feedback. I'm glad to see my first comment (only nine downloads do far lol) is so positive.
I've been at around with the project a little since the jam ended now, and the game does play very differently with the movement and gravity controls separated. I'm not sure which I actually prefer so going forward might just have them as separate modes.
The double jump does seem pretty useless I'll admit, but I've found it's saved me from an unexpected stalactite more than once, and I'm currently implementing an item/power system in which the double jump has a purpose. So that'll probably still be in the next build. It'll be nice to have more than 48 hours to work with!
All that said, creative criticism is always appreciated and I'd love to get your feedback on the next build too. :)