Sweater Leggings - Yes or No?

I'm totally obsessed with these fair isle sweater leggings. Tuan thinks they are crazy but I cannot stop looking that them. What do you think?

Sweater Leggings by marychu featuring elastic waist pants

J.Crew fair isle legging / Free People elastic waist pants / Splendid fair isle legging / J.Crew red legging / Forever 21 print legging / Mossimo Supply Co. Junior's Sweater Legging - Assorted Colors / Mossimo Supply Co. Junior's Sweater Legging - Assorted Colors / Free People Winter Story Sweater Legging