Validation.

That's the word shared by two now-former investors of Vigilant Technologies (VIT) — a Pittsburgh-based tech company that makes wearable products aimed at teaching users how to avoid workplace injuries — following Portugal- and New York-based musculoskeletal therapy company SWORD Health's acquisition of the firm on Tuesday for an undisclosed sum.

According to Ilana Diamond, managing partner for 412 Venture Fund which marked its first exit as a fund after VIT's acquisition, the deal…