If Even Rogue can make an impact, so will this card. Even Rogue is actually not too inconceivable right now, just not a very powerful deck.
Outside of this option, I think the card won't have an impact. If N'Zoth's First Mate were still around, maybe, but otherwise, cheap weapons are not really worth a deck slot. And later in the game, the tempo gain from this card is not high enough. It is similar to Hench-Clan Thug, and this should not be ignored, though the Thug is a bigger threat, since it's harder to kill and fits in a strong deck.
Let's say you would only play this card if you can attack with a weapon on the same turn, and it's a 2 mana 2/2 with Battlecry: Summon a 1/1. The chance that your opponent lets you summon more tokens is relatively low. As that, it's slightly better than Murloc Tidehunter, but a pirate. Not bad, but really not that crazy either.
If the token were a 2/2, I'd say it is a good card, but like this, it's pretty mediocre.
This is an awkward card for rogues to use and they aren't the class that likes going wide. They have 2 mana 2\2 + 2\1 and it sees no play. This one is no much better. 2\2 is too easy to kill. It is similar to that 0\3 totem that gives 1\1 murlocs unconditionally every turn in a class that loves going wide.
It may be OK in even rogue, but even rogue is a fringe deck that needs much more support. Odd rogue can't play this by definition Tempo rogue. You do what? Play this on 2 hoping to go dagger 1 drop next turn? It will just get killed by other tempo decks and control can ignore it for few turns before wiping it together with all that tokens few turn later.
Deathrattle\miracle rogues have different game plansSome kind of pirate rogue? Well we haven't seen other pirates of the set. Maybe some deck of this type will emerge but I doubt that it'll be stronger than odd rogue.