Ed that is quite a crafty way of getting round the problem of adding reverb to the snare. The pre delay might be a fraction off though as the snare mic is closer to the snare than the OHs. Not a huge problem atall though, maybe not even an issue!!
My problem with mixing i think is the EQ and compression settings, and i have learnt a wee bit from your posts, cheers. I just aint exact enough with my EQ and compression settings. I mean i would leave the attak at around 10ms for everything! out of shear laziness. And when Eqing, i would be looking at the curve and not really even trying to listen to the changes as much as i should be!