Item Sets - No items not applicable to SR seem to state this.

Lord Van Damm's Pillager, for example, says it is not available on Howling Abyss, but makes no mention of being not available on SR. Same with Overlord's Bloodmail, the 2300g Twin Shadows, Guardian's Horn, Dervish Blade and presumably other items.

Minor clarity issue, but it's details like this that turn a fun game into a fun and polished one.