Very interesting mechanic. It's an awesome concept to have to value which movement button you would rather lose. The only problem I had with it is the difficulty. It seems kinda unavoidable to take damage at some points, but it's probably just because I haven't played enough to get comfortable with the controls. Especially on the second level I found it a better option to just skip the weapon and book it past the enemies to get the boost power up. If the difficulty curve was tweaked this would definitely be something special. Still, as is it's something to be proud of.
Check mine out and drop a rating, if you have the time :)