Only 10? The best strategy I can figure out involves 20 stickers (to switch U and F, which should be blue and yellow): (UFm FUm) (RUF LUF) (U F) (UBL FDL) (UBR FDR) (DFl BUl) (DF3l BU3l) (DFm BUm) (DF3r BU3r) (DFr BUr). I guess that's 10 pairs of swapped stickers though.
EDIT: Some other people in #rubik told me I could save 4 stickers by disassembly, so it's just (RUF LUF) (UBL FDL) (UBR FDR) (DFl BUl) (DF3l BU3l) (DFm BUm) (DF3r BU3r) (DFr BUr). Still don't know how you manage 10.