Congratulations on acquiring such a fine piece. The Waynorth Lambsfoot remains one of my very favorite knives that GEC has produced - they did a tremendous job.
I am a fan of the swayback frame and nothing pairs quite so nicely with said frame as much as a Lambsfoot blade. I can't speculate too much as to what the intended purpose of the pattern but I suspect that it wasn't particularly purpose built for any single task - I simply find it more refined and nimble than its broader cousin, the sheepfoot. As you might have discovered already, the Lambsfoot excels at just about any chore short of skinning an animal, you could hardly want for a different knife in your pocket.
I never really thought about the differences in cant between the various interpretations of the Lambsfoot until
JohnDF
brought it up awhile back. I value the added length of the Waynorth (in both blade and handle) and have never found it to be uncomfortable in any position or grip. It has very little cant (if any) and the sway is far more gentle than in other representations but I've never felt that those features (or lack thereof) detracted from it in use. As they say though, different strokes and all that.
By comparison, I have examples (modern and vintage) that display varying degrees of cant. I generally dislike knives that exhibit too much forward cant. The swayback frame alleviates the most egregious of cants to some extent by how it orients the knife in hand but overall, I am not keen on it. I much prefer my blades to be as straight as possible in relation to the frame. However, canted blades have their purpose and can lend more power and efficiency to a specific cut - I just never need that kind of pressure in a pocket knife, hence why I am an avid collector and user of fixed blades as well.
Here are a few examples of modern and vintage examples alike - note the differences in cant between them. The Waynorth and Wostenholm are fairly straight where the A Wright and Deakin exhibit considerable cant (the A Wright is a more extreme example versus my other A Wright made knives).
Ultimately, it is going to come down to your preference in a knife. Since I generally keep a looser grip on my knives and use the pinch style grip in most applications, I can get along with many different patterns and frames - with a few notable exceptions, of course. The Lambsfoot in a Swayback frame and with limited cant hits a sweet spot for me, for sure.