Is it possible to get all three ascended Order Packs from HoT?

Looking through my Collection achievements and I see that I don't have Warmaster's Pack or Magister's Pack, as I chose the story reward that got me the Lightbringer's Pack. My question is: can I actually work on the other two packs by sending more characters through the Prisoners of the Dragon chapter, or is there another way to start the collections, or are you forever locked to just one of the three?

Thanks

Yes, you can have all 3 backpacks. You have to bring 3 characters in total through the HoT storyline and choose a different backpack for each of them at some stage of story completion reward. There is even an achievement for building all 3 ascended backpacks: Pact Reformer.

Great, thanks! Do you know if I need to start the character from the beginning of the HoT story, or just replay the Prisoners of the Dragon chapter?

Story step is character based, you probably need to play another character from the beginning.

Since you can claim story rewards only once for each character (on replay with the same character you simply get nothing), you have to play two additional characters from the beginning.

Well good luck with getting them. I finally got around to doing the story again and got my second collection started. However I am stuck on the Magister's pack Airship Cargo Strap because I cant seem to get a verdant brink Tier 4 night ever. If anyone knows of any guilds or groups that run this to get to t4 I would love to know when and join in! Oh and yes you do need to play pretty much the whole story each time because there's other parts of the collection rewarded at different story steps after you get the pack to start it.

Can confirm this works - I have all 3 collections started, but haven't gotten around to finishing them.

I had thought the character had to be a member of the order to get the pack, but I just checked on the Wiki and it's a choice. I think I just always chose their orders pack (and not by coincidence my 3 main characters are in different orders.)