Sorry for the delay,
I found the very rusty No Mercy which had never been sharpened and just finished tuning it up with the broadhead sharpener. The answer is a definate yes, it will do them, both single and double bevel styles.
Because of the double angle head profile, they need to be done similar to a curved edge blade by manipulating the clamp to sharpen the forward 1/3 in one operation and the rear 2/3 in another.
You can watch the demo video on my website and especially the secion on sharpening curved blades. Similar technique but, only two positions instead of working the length of the blade from end to end.
The steel does seem a bit soft. It only took me about 5 minutes to get one blade to plow hair in any direction, which is pretty quick for the first "out of the pack" sharpening.
Ron