It is an exceptionally annoying defender to fight. By far the most annoying thing outside of a Blisslaxking being GR'd every time.
It's easy to beat, but I don't think Shuckle ever loses enough Motivation so that it takes less than 3 battles to knock it out of a gym. And it's so easy to beat that it is almost like an insult - at least with Wobbuffet, you have to put some effort into it. Not much, I know, but it's got like 200HP minimum so you normally have to hit it with at least 1 Charge move, regardless of the Motivation.
