4/10 personally just not something i'd have on my team. if i want a dragon type i'll go with something like garchomp or dragonite c^^'. also when i used it way back in XY, i just remember it being painfully slow.
10/10 swiper stop swiping i just love dark type pokรฉmon. if i was a type trainer, it would be dark type and i'd have a thievul on the team. of the two, i like nickit's design better - it's just excellent.