Even if I did, it wouldn’t be a valid experiment. Vyvanse can only be metabolised by digestion. You can’t snort, smoke, shelf or inject it. Vyvance takes more than an hour to start working and lasts 12+ hours, meth is a few minutes and lasts a few hours.

My point is they are quite different. Vyvanse, by design, is much harder to abuse, and most people don’t want to take it recreationally.