Help explain intersample overs, please?

[192kbps]

Firstly yes it will truncated some bits. What matters is the noise at the output or the SNR of the actual DAC. Then some dacs like ESS based can preserve most of the SNR when reducing volume internally. For AK based I think(correct me if I'm wrong) will have a trade off between SNR and else. Most likely reducing a little bit of SNR can give better SINAD because distortion may also decrease.
So in the end you may avoid the intersample clipping and gaining SINAD at the same time. So this may be worth the trade off. More over, one can always use two dacs with each for parallel to gain back the 3db of SNR.

Two dacs?
Do you mean two D90SE? Or is it the eight channels (>2) used by D90SE?