either way, they will be useless beyond 100. I'd imagine that if the next level cap is 95, the weapons will be like the Archy gear. damned good till level cap, then raid weapons will provide better stats. However, once you hit 96 in the next xpac, the weapons will again become better.
For topical discussions of the Source Mod remake of Half Life: http://www.gamefaqs.com/boards/683833-black-mesa