It seems that U-turn and Mountaineer are the true distinguishing factors between Syclant and Weavile.
With this in mind, has anyone tried a Scizor-like CB set? I'm surprised this isn't in the analysis.
I imagine that it would be pretty good.
Something like:
Syclant @ Choice Band
Jolly
Mountaineer
4HP/252Atk/252Spe
U-turn
Ice Shard / Ice Punch
Brick Break
Rock Slide / Crunch / whatever
Outspeed stuff, come in for free, do the normal CB scizor stuff, but with 115 speed and SR immunity. Haven't tried this yet but it SOUNDS good. You could even put a random special move on there and change the nature I suppose, or use less speed to outspeed specific threats. The problem is that CB Scizor has a higher base power priority and Superpower over Brick Break as well as Pursuit, making it much more versatile. The thing is that CB scizor generally only uses bullet punch on DD Tyranitar, Azelf, Gengar, Alakazam (lol) and Mence on Outrage. On everything else it will usually uturn or superpower, and occasionallu may use pursuit even on the majority of this list. Syclant can only kill Mence. Lacking Pursuit, as well as pseudo-STAB on it is really the killer here, as that would kill most of the other pokes on that list, and really what makes it inferior to Weavile or Scizor unless you are playing a sweeper set. Utilize the speed, as that is really the only advantage over Scizor, and utilize U-turn as that differentiates it from Weavile. In many ways, Syclant is like Heracross. No matter what set you use it is almost completely overshadowed by either Lucario or Scizor, and Syclant is in the same position between Weavile and Scizor, although it has its advantages over both, including a better SpA stat.
It is unlikely that this set will break Syclant as it did to Scizor. The fact that Scizor does almost the same job means that there is already a monstrous amount of metagaming against this set, so try and use it differently.
btw that comment that Umbreon Dan posted was mine lol, though I should have mentioned the lack of pursuit (and STAB on dark attacks) that makes it worse against Latias, Azelf, Gengar, Alakazam, etc. compared to Weavile.