Turr-
I do that on ALL my guitars (all LoPro equipped). *As Jimm said, when you drop to D, the other strings go out of tune a little, but it's worth it (to me).
I've been doing it for a while now (since 1987) and have gotten pretty good at dropping to D. *Not as fast as a guy with a hard-tail-equipped Les P*ul , but pretty damn fast.
I'll also agree that the Original
Floyd Rose (OFR) trem has a stiffer feel than the LoPro. *Try out the trick. *If it works for you, great; if not, not a penny lost and no one got hurt. :-)