Is this still viable build as a starter?

I saw this this Banana’s grey’s pierce abomination in The fastest cleaners in the World
I know that this relies heavily on perfect greens, but will it viably strong as a starter or just non-gd-stash character for campaign etc.? Or will it be just meh average?

Pierce Infiltrators are still very good, but that build (among others) is responsible for a lot of nerfs to pierce/cunning gear, so it’s not going to be AS good.

You might do better to use one of the Inflitrator builds here

as a general guide and then respec into banana’s endgame one once you’re at the right level and have the gear you need for it.