The 50 Art is only a few steps back with the 85mm, it seems a bit obsolete to keep it when you have both ?
In the past I had the 35 Art + 85 1.2L MKI, this is the more common combination.
But as I will do mainly modelshoots and the 50 Art is so perfect for halfbody shots, but on the other hand it's not practical to switch or do shoots with both 50/85 Art.
The only reason I'm doubting to keep the 50 Art is for the better dof/bokeh than the 35mm due to the 15mm difference.
I guess i'll have to check some likewise pics between the 50 Art & 85 Art, and see the difference is minimal, otherwise I won't get it over my heart to sell the 50 Art
Some photographers still work with the 50 Art & 85 Art like Manny Ortiz.