I have Icebreaker, and would be happy for anybody who wants it to have the opportunity to get it. RNG luck isn't earning, and my ego is not tied to my gear.
I have both and i still think he should because why should only you get one?
People who are playing with me since day one and have not got one.
Also you can expect players to have said weapons and perform in the game to their best.
I've had both for a very long time, bought ib from xur got gjallarhorn from the first week nightfall. And while theyre both good guns, they arent game changing. I rarely use either of those for my exotic, hawkmoon or plan c are my general go-tos. The people asking for xur not to sell something they have, are just as bad as the ones who are always making threats to quit if xur doesnt have whatever weapon they feel he should have. Just be thankful xur is in the game, to give you easy access to the best gear, even though youre disappointed sometimes, other people are not. I for one, am happy when he just has any exotic engram and heavy ammo synths.
I don't see why it matters if he sells it. It would make all my runs easier if everyone had them. Plus no one is unique in this game. Everyone is basically a cut and paste copy if you are max level.