good gimmicks have the power to win battles. I once lost to a torment tran because my blissey only had seismic toss as an attacking move (wish, toxic, and protect were the other moves) when he sent out heatran I thanked my stars that it wasn't a physical sweeper only to realize the true horrors of torment tran.
I'm not familiar with lopunny or froslass...however, if you say they work, I'll believe you. People are right to fear the unexpected, that's what gives gimmicks their power. Destiny bond drifloon (focus sash + unburden) is a friend of mine since I LOOOOVE drifloon.