Jim Schley-May > analysis and technique... almost the same as I used, maybe that's the only way
, however I split it only in 2 bands.
You raised the voc, that's nice, but I don't like the tradeoff - drums. And... you've lost the (low of the) kick too.
However your ex. doesn't suffer any big phase cancelations in mono as the rest of the examples posted here.
Other listenable examples IMO:
CJStayFarField (collapses in mono)
AJC Stay 01 (collapses in mono)
Stay OTR (collapses in mono)
BR Stay (bass ok in mono, but the rest becomes muddy in mono)