The performance of a variation lift isn't that important - the carryover to the main lift is. The amount of carryover is different for everyone. If you need work on your anterior chain and glutes, I think it would have significant carryover. Zercher squat, front squat and SSB squat are all good options for working the anterior chain hard. It's just a matter of preference. With that said, a 180kg zercher squat would staple me, haha.