I love Robben Ford! one of my favs! That's a pretty common, but cool device, but by extension, one can substitute (in theory) a min/maj7 chord a half step up (on bVI) in place of a V if the context permits (altered sound).
another way i often substitute min/maj7 is to play a Imin/maj7 in th place of a IV7 in major and minor keys.
for example: in "Tenderly" the first 4 chords are normally Ebmaj7 Ab7 Ebm7 Ab7
but one could play Ebmaj7 Ebmin/maj7 Ebm7 Ab7
in "beautiful love" there's a IV7 when it goes to the G7(#11) , so instead of playing Dm7 to G7(#11) one could play Dm7 to DmMaj7.
Same thing in "Body and Soul"
in Samba de Bencao the chords vamp between I and IV7 but one could play instead:: Imaj7 to IminMaj7
the same things works for II7 in major (play a min/maj7 chord a 5th up) but it works a little less convincingly in my opinion.
sorry if it sounds like i'm lecturing, I just love talking about this stuff and wonder what ideas others have.