Well, Nero provided one too.
If you open CD-MRW formatted disc on conventional drives, there's some file that can be read in 'normal' way, and one of the file is the CD-MRW Reader. It's called EasyRead if my memory serves me well.
After you install it, the CD-MRW contents will be available on that drives.
I don't know if WriteCD-RW Pro! MRW format is compatible with InCD. Former UDF format like DirectCD and InCD are incompatible.
But IMHO, it should be compatible because CD-MRW had standard written by many major companies.