Why not? I've done it plenty of times if my negative fits onto a grade 2 contrast range and gives a print I like. Why introduce filters with the resultant loss of light if I don't need to? I'll leave the filters set to 0 in my colour head and then they are completely out of the light path.
As I mentioned, the Ilford Multigrade paper tech sheet says that unfiltered is an identical contrast range to a Multigrade 2 filter.
I have been under a misapprehension. I thought you were arguing that, even without dodging and burning, a split-grade print was superior to a print made with a single filtered exposure. My apologies.

Now we have to decide what filtration to dodge and burn with.