Not at all strange. I consider it more strange to do what you are doing, higher electricity consumption to generate DSD512, for it to end up as PCM48kHz with crappy ADC filters (crappy in comparison to HQP).
Shouting ‘studio grade’ doesn’t mean much - but since you did, my active KEF LS50 W2 have significantly better vertical dispersion performance than those 3 ‘studio grade’ monitors you listed… Not sure if you are aware but pretty important to have good dispersion in all directions when you are nearfield…
and with great integration with subwoofer via Acourate DSP, all convolution managed by HQP at PCM96kHz = 
DSD256 with my Holo Cyan2 with my headphones. It would be ‘strange’ to feed that into my KEF analogue input 
Just my opinion though, I don’t have any qualification / expertise (about anything)
Do what sounds best to you