Not any stranger than using x and print together.

Maybe this example is easier for you to "accept" as a use case?

  DB<1> sub doit { print "test"; return 1..3}
 
  DB<2> x doit()
0  1
1  2
2  3
  DB<3> 
test
  DB<3> p doit()
123test
[download]

As I updated in the OP, when you are using the debugger as a REPL, these inconsistencies are strange enough to care for.