When attempting to use the new winetricks-based installer, it runs into:

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You are using a 64-bit WINEPREFIX. Note that many verbs only install 32-bit versions of packages. If you encounter problems, please retest in a clean 32-bit WINEPREFIX before reporting a bug.
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Using winetricks 20180815-next - sha256sum: 762a612d72192fd189c274d28de9e98f30063daa925d386819544a5054af743d with wine-3.13 (Staging) and WINEARCH=win64
Executing w_do_call setup_dxvk
Executing load_setup_dxvk 
Executing cp /home/user/git/dxvk/dxvk-master/x32/dxgi.dll /home/user/.PlayOnLinux/wineprefix/BlizzardEntertainment/dosdevices/c:/windows/syswow64/dxgi.dll
Executing cp /home/user/git/dxvk/dxvk-master/x32/d3d11.dll /home/user/.PlayOnLinux/wineprefix/BlizzardEntertainment/dosdevices/c:/windows/syswow64/d3d11.dll
cp: '/home/user/git/dxvk/dxvk-master/x32/d3d11.dll' and '/home/user/.PlayOnLinux/wineprefix/BlizzardEntertainment/dosdevices/c:/windows/syswow64/d3d11.dll' are the same file
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Note: command cp /home/user/git/dxvk/dxvk-master/x32/d3d11.dll /home/user/.PlayOnLinux/wineprefix/BlizzardEntertainment/dosdevices/c:/windows/syswow64/d3d11.dll returned status 1. Aborting.
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The md5sums of the files are the same, but it'd be nice if it didn't error out immediately if one of them hasn't changed, since it skips the regedits and dlls (removing the files beforehand does work, and I added a line to rm them beforehand to get it to work)