Its winrates are atrocious. In wild the decks that give you enough time to play it have more than enough resources to clear the board an infinite amount of times. But its pretty fun, I'd craft it if you don't care about winning.
I crafted it a couple months back because I really wanted to try the archetype and personally I LOVED IT. Climbed from rank 25 wild to rank 8 in a couple weeks and the portal certainly pulls its weight in control matchups. Regardless, if you play hearthstone to have fun rather than to compete and win money, you should craft whatever your heart desires. I ended up dusting Lakkari Sacrifice to build onto my standard decks more because I had my fun with it and decided not to play wild anymore. But I've never regretted crafting or dusting anything because I simply just enjoy experimenting with the game rather than just trying to "win" all the time.
Thanks for the reply I am not expecting to win a lot of games and like the person above said once it's played I'm expecting the imps to get wiped every turn but as long as it's a fun to use that's what I was aiming for. I'm with you about crafting what you want but I made the mistake of crafting shudderwock after the nerf and regretted it instantly. I do use it tho for jade shaman so I guess it's not too much of a bust but grumble is useless to me now.