I really think I will only use the WE for re-profiling, or for seriously heavy grinding jobs. It's just quite a lot of kit to bring out and set up. The Sharpmaker carries in my backpack, and literally takes seconds to get scary sharp steel.
For those interested, here is a copy of the LONG winded answer when I asked about FFG, including the Janky Diagram they sent me, showing how it's done:

(QUOTE)
Dear Mr. Musashi,
We apologize for the delay in responding to your question! We are a new
company and as such, consist only yet of myself and my business partner.
Both of us have been on the road at trade shows and I just got back into the
office yesterday. I saw your email, but only now have had time to respond
to it with the attention it deserves. We sincerely appreciate your
patience!
The Wicked Edge will clamp any knife that has either a fully flat ground
blade or has flat parallel sides just fine. The only kind of blade shape it
will not clamp is one that is double-edged, like a dagger, and has no flat
before the tang enters the handle. I have sharpened two daggers. Both of
them had a small flat adjacent to the handle that the vise could clamp on
to.
As for knives with the blade shape you are referring to, it is simply a
matter of loosening the top screw so that the bottom of the free vise jaw
kicks out a little more, using the bottom holes in the fixed vise jaw for
setting the depth if you can, aligning the blade so that it sits vertically
in the vise, and then clamping the vise down on the knife tightly.
I have attached a pdf with a drawing of what it should look like when done
correctly. The key, after doing this, is to not bear down on the blade with
the stones. But this is true no matter what kind of knife you are
sharpening. There is no need to bear down. Just let the diamonds do the
work for you.
The method we use to tighten a knife sufficiently into the vise goes like
this:
1. While holding the knife in position with your right hand, push the
bottom of the free vise jaw out away from the fixed vise jaw with your left
hand. Adjust the top screw until the free vise jaw is properly positioned
to clamp the knife as desired.
2. Turn the lower screw in until it touches the free vise jaw and holds the
free vise jaw in place.
3. Tighten the top screw down on the blade good and tight.
4. Give the bottom screw an additional half turn or so, as necessary to
further lock the blade down in the vise.
5. Check the blade to ensure it is sufficiently stable. This does not
require heavy pushing. Just a light nudge to make sure it doesn't move
easily. You will get the feel for this very quickly.
As a final note on this method of placing such a knife in the vise, you
probably noticed that one side of the blade is not touching except at one
point at the very back of the blade. This is okay and, in fact, desirable,
because you want the knife to be oriented vertically so that the bevel you
create is even on both sides. If the vise is sufficiently tight and you
don't bear down unnecessarily, then the knife will not move and you will
achieve an outstanding edge on it.
I hope this answers your question. If you have any additional questions,
please do not hesitate to give us a call on our toll free number:
877-616-9911 We are generally available on week days between the hours of 9
am and 5 pm Mountain Time. If we don't answer, just leave us a message and
we will call you back as soon as one of us gets back in.
We will be happy to process your order right away once you have placed it.
We pride ourselves on customer service and are sure that you will have a
very positive experience with us.
Thank you for your interest in our sharpener!
Best regards,
Devin Kennemore
The Wicked Edge Team
(END QUOTE)
The MOST hilarious parts of this to me were, "you
probably noticed that one side of the blade is not touching except at one
point at the very back of the blade. This is okay and, in fact, desirable..."
and also, "We pride ourselves on customer service and are sure that you will have a
very positive experience with us."
Those literally gave me a pleasant chuckle. Ha ha ha. Those jokesters... They got me good!