I Recently made a post about this and after having played him about 5 more games after. You just needed to realize that the range on the Q is very short. Like as short as his Aa's short. Which often makes it feel like it never hits because well; YOu were never in range to use it.
Adding to the fact that the ability needs to be held down to go off and it has a .25 second cast time; Adding even more clunky on top of it being really short and awkward to use.
The only fix around this would be increasing the range a bit and nerf the damage to compensate or something;
Tl;dr Feels clunky and bad because its range is to short; Often feeling like you never hit anything.