I doubt you'll see any real negatives in terms of performance. ExFAT is the necessary format if you want to transfer files from Mac to Windows and vice versa. Windows can't read/write APFS or HFS+, and MacOS can't write to NTFS. FAT32 is your only other option, but it has file size limitations.
You probably want to test it to see. exFAT has been around since 2006, so it's not exactly a new file format. Chances are you will have support on any modern OS, including cars and cameras.What about car manufactures (usb keys u attach to listen on the go)... do they support exFAT? That could be the other reason
i've never really used or needed exFat, because i'd rather separate drives, vs same drive for everything.
Just curious, why you would suggest that? It’s not like the other formats are new or have issues with data loss/failure. I can see why with Mac-exclusive content, but there are times when it would be advantageous to have content accessible to other operating systems.This is my standard reply when this subject comes up.
If you have Mac files that are important to you, keep them on a MAC-FORMATTED drive (HFS+ with journaling enabled).
DO NOT "trust" your important Mac stuff to drives that ARE NOT Mac format.
If you need to exchange files between a Mac and a PC, use a cross-formatted drive that is specifically dedicated for this purpose. Usually a USB3 flash drive of sufficient capacity will do the job.
But again, DON'T keep important Mac files on a "cross-formatted" drive.
This is my standard reply when this subject comes up.
If you have Mac files that are important to you, keep them on a MAC-FORMATTED drive (HFS+ with journaling enabled).
DO NOT "trust" your important Mac stuff to drives that ARE NOT Mac format.
If you need to exchange files between a Mac and a PC, use a cross-formatted drive that is specifically dedicated for this purpose. Usually a USB3 flash drive of sufficient capacity will do the job.
But again, DON'T keep important Mac files on a "cross-formatted" drive.