Man, I didn't know odd tunings we're so popular. I typically use just drop tunings anywhere from drop D on my 6 string, to drop A on my seven string, to Double drop E on my 8 string.
The idea of tuning the guitar in any other way so all the scales i've learned wouldn't fit! But I guess thats how a lot of people feel about drop tunings in general who just stick to standard tunings
Odd tunings are my favorite.
I recently said fuck it and just stuck with D standard/Drop C, but drop the lowest string to whatever low note I want (if I wanna pull some TesseracT/Meshuggah type shit.)
I've been recently into Dir an Grey's tuning, if I ever decided to get a 7 string, which is Drop A/D (ADADGBE)