The right way to install on EFI a dual boot system, is for both operating systems to boot from the same EFI partition. This allows the firmware to display the dual-boot menu and simplifies removing one operating system.

If you install dual-boot using two separate EFI partitions, you need to specify to the firmware which partition to boot from. You will not have a dual-boot prompt. Removing an operating system requires knowing which EFI partition to delete (and not making an error).

Not all firmware versions will support booting from more than one EFI partition. Many just search the disk(s) for the first EFI partition that they can find.

The right way to install on EFI a dual boot system, is for both operating systems to boot from the same EFI partition. This allows the firmware to display the dual-boot menu and simplifies removing one operating system.

If you install dual-boot using two separate EFI partitions, you need to specify to the firmware which partition to boot from. You will not have a dual-boot prompt. Removing an operating system requires knowing which EFI partition to delete (and not making an error).

Not all firmware versions will support booting from more than one EFI partition. Many just search the disk(s) for the first EFI partition that they can find.

The EFI partition itself is quite small, so no point in setting for the minimum size of 100 MB. The maximum size mentioned is 550 MB, which is still quite small for modern disks.
See What is the absolute minimum size a UEFI system partition can be?