Hey Michael, so do I mate!

With the experiences you've had with both set-ups, I think you will see what I was getting at with Peettee's post #53199 on Page 2 of this thread....with its curled up lip at the front edge, I feel it will need
contact for it to work properly.
With a normal Scotty 45 bedknife set-up, the very top edge of the front
vertical face, is where the cutting action takes place. With a bent-lip bedknife, the grass sward would tend (I imagine) to be pushed upwards and perhaps away from the bedknife....
I have spoken earlier this afternoon to 2 greenskeeper friends of mine...and both work at Bowling Clubs, both have replied that the bent-lip bedknife would be unsuitable for use on a green, in their opinion.

As you have pointed out, "In the real world on a home lawn, I really don't think it will matter.
All good stuff mate....
