I would say that you'd need to consider the history of OS2, which was of a similar nature in that it started out as a competitor to DOS and had a Presentation Manager to compete with Windows.
There are two issues with this notion:
1) Ease of user operation when switching from machine to machine. If you always do your work only on one machine or only with one OS, then there is no big issue. If your home machine is one and work is another, then you'd need to learn two, possibly, quite different programs and/or user interfaces.
2) While file formats are often claimed to be compatible, I've rarely found that to be 100% true. If you need to share documents with people running Windows, you may run into problems.
TTFN