T-Resc on USB

Hi!

Hopefully the last one (for today): How involved would it be to run
T2-Resc from an USB stick? I've seen misc/archive/iso2stick.sh, which
looks like it should do the trick. Is that the official way to do it -
if there is an official way? Doesn't just changing (cd) to (hd0,0)
cause issues? What if there really is another HD?

Questions, questions...
Thanks for all the answers :)
--j