The best workaround I can think of is to flatten the multicam and export XML. If you have a color grade you want to keep, make a new timeline in resolve, copy and paste the multicam camera source into that and export each camera with it's color grade. then in premiere you can link the source file to the original. You still won't be able to switch between cameras, but a workaround for that is to stack all the camera angles on the timeline and disable them and Enable them as you need in premiere. I've been editing a podcast and that's the best workaround I can find.
Also, if you did any scaling in resolve and the source is 4k, and you want to keep the scaling, in Premiere you can use a transform control to size the clip properly without losing that custom scale. I hope that helps!