I thought there was a Mac Performa or Quadra (like 2 or 3 very specific models only) that supported both Apple DOS and ][e cards.
And I get that the Apple DOS and Apple U/X performance on this machine might not be very good. Early 90’s computers and needing to be wrangled to even support normal, supported operations and configurations wasn’t uncommon.
Apple never made a x86 DOS card for the LC PDS. Maybe a third party like OrangePC did, but I can't find a definitive confirmation online.
The only Apple II card was the Apple IIe card (LC PDS). All the machines with a LC PDS had only a single slot, so even if there was a DOS card you wouldn't have been able to use it and the IIe card simultaneously.