For field dressing and butchering, and kitchen work I have no problems with a hollow grind. They slice well. But I also like a convex blade because, as Ed Fowler put it, "there is only one cutting edge adequately supported by the remaining blade" and therefore, "I also believe that such blades can be made sharper than the other two grinds."
In general, though, the flat grind is my favorite. Easy to sharpen. Tough enough for some abuse and utility use. And it slices well. Some friends of mine couldn't believe how well my cheapie Opinel #12 could slice tomatoes and bread. And my chunky Busse Mean Street is a great, rugged utility fixed blade.
So...I love my hollow ground Wegners and Sebenza but would love to see both in a flat grind. I think it is a better "all around" grind.
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Hoodoo
I get some pleasure from finding a relentlessly peaceful use for a combative looking knife.
JKM