Exact bless effects?

[DrPraetorious]

Also note that the W9 blessing is still not accumulative with the quickness spells (although the Def bonus is.)

[HoneyBadger]

So, is it advantageous or superfluous to give a water9-bless unit say boots of quickness?

[DrPraetorious]

W9 Bless - +4 Def, +50% AP
Boots - +3 Att, +3 Def, +100% AP
Both - +3 Att, +7 Def, +100% AP

I'd say - if you're able to get boots, it's superfluous to get the blessing, rather than the other way 'round.