Hi Cmplxty
Sorry for the late reply, my mom in law is visiting. Oh yes, I actually did try brushing my teeth with the other hand, it felt really weird and kinda alien, but apparently it activates different parts of your brain.
The experiment didn't go as well as planned, but I think it's actually something that will be a good practice to heighten your other senses every now and again. I discovered (while trying to sleep and being disturbed by mosquitoes), that as soon as you switch off the light, my hearing picks up immediately, switch the light on and your visuals take over, it is absolutely insane how lightning fast these changes take place.
Have a good week :)