AA777888
I guess you and I will disagree, then. I'll stick with the recommendations of my instructors and the likes of Tim Tucker, Shawn Coyle, and others. It's a clearly divisive issue though, as this topic shows with ample numbers of posters coming down (hah, a pun!) on both sides of the question.
For many years, the British Armed Forces have not (deliberately) conducted EOLs onto anything other than grass, for both wheeled and skidded helicopters. Engine off areas (at RAFs Shawbury, Ternhill, Chetwynd, Middle Wallop etc) were all grass. FYI, both Crab and myself were RAF QHIs, btw. I first did my solo EOLs as a basic student in a Whirlwind 10 onto grass in 1979.