Monarchy 24/96 Upsampler to Dacmagic??

Does anyone have any experience or opinions as to using a Monarchy 24/96 Upsampler to the Cambridge Dacmagic? Since the Dacmagic will take up to 24/96 and upsample to 24/192 why not feed it the highest sampling rate possible? Or does it really matter to the Dacmagic what it is being fed, since everything is upsampled to 24/192 anyway