You can still choose your classes in the lobby so I’m assuming you have to choose Jack’s class as he is still tied to it and not present in the character selection.
You can select Jack as a character. He was on the characters list for me.
I was in Ektope’s game.
Can confirm, the biggest laugh I’ve had in the game for a long time.
No. Not even on PC. 
Looks hillarious lmao, its jack so still useful for grabing the ammo box, but without perks its easy to take it down.
Pretty sure I was the other jack in this match. I seen this post a hopped in to check out jack and quit once I ran out of gnasher ammo

unbelievable
I love it
This should be a permanent thing for Jack but obviously they need to fix it so he can reload, pick up ammo, chainsaw enemies. I think it makes sense that he can’t aim properly since he is a floating robot.
He just loads in that way. You don’t have to do anything but pick him
It’s no fun as Jack after a few waves. Has potential, but once again, Jack gets half love. He should at least be able to get more ammo from a box. A new wave gets you 8 rounds in the gnasher, that’s it. You have 8 shots then you are useless
He can pick up the ammo boxes and dropped weapons (can’t use either)
I don’t really have got a problem using Lancer with Jack on PC. 
I have no doubts about that 
The other Jack didn’t left. But a non-Jack character maybe got sick of this two Jack BS and left early.
My friend played as Jack with us, he was a killing machine, me and our other friend would just share ammo, and he would get us the ammo boxes, one of the random players shared with him too… he couldn’t figure out how to get his snub though, we had fun!
I don’t remember Jack having this upgrade available in the campaign…
Everybody gangsta until Jack grabs some weapons to kill grubs.
I have a clip somewhere where i switch from Jack to Fahz at the last second before a Horde game started, and i ended up as Jack with a Longshot and a Markza.
It was rather fun, for a small while.
Theres a glitch I invented or found however you want to word it to play as combat medic jack or mechanic jack this is basically the same except no perks or cards or ultimate or infinite ammo
Maybe it was a different match. I played with some other jack on gridlock who had the hotrod skin
