MQA itself is lossy though… 
And that “24-bit 192kHz” is bogus, that is the original source resolution, but not something that would be actually carried by MQA.
With HQPlayer Roon now always says “Enhanced”, so if you like to use HQPlayer you’ll have Roon telling that the output is enhanced by HQPlayer.
So this is what I have with MQA:
And with regular hires:
In latter case, signal path in Roon is bit-perfect but it still says “Enhanced”.
So the entire “LOSSLESS” vs “Enhanced” in Roon can be quite misleading information since it seems to consider DSP processing done by DAC “lossless” and DSP processing done by computer “enhanced”. So the wording is a bit funny, since the “lossless” here is less accurate than the “enhanced”. (for example Roon and HQPlayer use 64-bit floating point math, while Pro-Ject DAC in question for example does 32-bit integer math)