Sod Knife...Really?

Thank you, but I'll pass on the sharpened, curved cheese knife handed to me as a sod-cutting implement today. True, this was my first real experience laying and cutting sod, but for the love of god a sod-knife should, unless I am comically mistaken, be able to cut... sod!
Tomorrow the toothbrush-handled cheese knife stays in my tool bucket and I shall once again employ my Leatherman tool to finish a job at which the nominally ideal tool has failed. (However, the next time I happen upon an unclaimed wheel of smoked Gouda tossed into the garden in a fit of Roman excess by an affluent client, I daresay it will be elegantly sliced and delivered to my tongue in no time at all.)