I would to naturalize, but my dh would keep them mowed off. I have an area that about 80 ft in lenght that runs along the highway in front of my house. I planted a row of daffs, some heirloom iris and a tall orange dl. I also put in some hot pink drift roses. There is bermuda grass there and I plan on just letting things go a little natural. dh will just mow around them and some weeds in it will be ok.
I hate this bermuda, it is so invasive and the roots are deep and almost woody. It is brittle, impossible to pull out and even a little piece will grow it right back.