Upsampled 44.1 CD to DSD - does it sound good?

Has anyone heard regular CD upsampled to DSD - the planned rig will be a MAC computer/server through a firewire connection to a Purcell upsampler to a DCS Delius DAC. After loading CDs on the server how will they sound upsampled to DSD? Reading between the lines in a few write-ups it seems as if some serious audiophiles were questioning the sound quality of this approach.

Appreciate anyones input/help on this.
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