Perhaps you call it useful spill, HOWEVER I DON'T. Useful spill (for me anyway) is such as you get from a SF 6/9P series (throw in a Malkoff and YES!, now that's some REAL output!), 2008 Inova T series (not the pre-2007 series), SF L2/L4 (now THAT's some "spill"!) or any light that has some actual "spill" to the beam (at least for me, YMMV).
I realize that everyone "sees" things differently, however the new SF E series is "found lacking" by me (YMMV), much like the old (pre-2007) Inova T series, which I seem to remember (back then) people complaining about the lack of spill, but when SF does it, it's the "greatest", which I just don't buy into.
I don't dislike SF's, as a matter of fact I have about 20 of them (and SF's ARE my favorite flashlight's), my first 3 SF's I bought were in 1995 (6P's and a 9P) and I carry 2 SF's "on-duty" and 1 "off-duty", almost always, ever since.
My .02 FWIW YMMV